What exceptions or limited-scope system work may be treated differently?

Grounded in the retrieved California Existing Building Code — click a citation to read the verbatim passage:

• CEBC § 801.2 High relevance — show source text

  801.2 Alteration Level 1 compliance. In addition to the requirements of this chapter, all work shall comply with the requirements of Chapter 7.

  801.3 System installations. Requirements related to work area are not applicable where the Level 2 alterations are limited solely to one or more of the following:

  1. Mechanical systems, electrical systems, fire protection systems and abatement of hazardous materials.
  2. Windows, hardware, operating controls, electrical outlets and signs.
  3. Alterations undertaken for the primary purpose of increasing the accessibility of a facility.

  801.4 Compliance. New construction elements, components, systems and spaces shall comply with the requirements of the Califor- nia Building Code .

  Exceptions:

  1. Where windows are added they are not required to comply with the light and ventilation requirements of the California Building Code .

  2. Newly installed electrical equipment shall comply with the requirements of Section 806.

  3. The length of dead-end corridors in newly constructed spaces shall only be required to comply with the provisions of Section 804.8.

  4. The minimum ceiling height of the newly created habitable and occupiable spaces and corridors shall be 7 feet (2134 mm).

  5. Where provided in below-grade transportation stations, existing and new escalators shall be permitted to have a clear width of less than 32 inches (815 mm).

  6. New structural members and connections shall be permitted to comply with alternative design criteria in accordance with Section 302.

  SECTION 802—BUILDING ELEMENTS AND MATERIALS

  802.1 Scope. The requirements of this section are limited to work areas in which Level 2 alterations are being performed and shall apply beyond the work area where specified.

  802.2 Vertical openings. Existing vertical openings shall comply with the provisions of Sections 802.2.1, 802.2.2 and 802.2.3.

  802.2.1 Existing vertical openings. Existing interior vertical openings connecting two or more floors shall be enclosed with approved assemblies having a fire-resistance rating of not less than 1 hour with approved opening protectives.

  Exceptions:

  1. Where vertical opening enclosure is not required by the California Building Code or the California Fire Code .
  2. Interior vertical openings other than stairways may be blocked at the floor and ceiling of the work area by installation of not less than 2 inches (51 mm) of solid wood or equivalent construction.
  3. The enclosure shall not be required where: 3.1. Connecting the main floor and mezzanines; or 3.2. All of the following conditions are met: 3.2.1. The communicating area has a low-hazard occupancy or has a moderate-hazard occupancy that is protected throughout by an automatic sprinkler system.

  3.2.2. The lowest or next-to-the-lowest level is a street floor.

  2025 CALIFORNIA EXISTING BUILDING CODE 8-3

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  ALTERATIONS—LEVEL 2

• CEBC § 1.11. High relevance — show source text

  The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

  2025 CALIFORNIA EXISTING BUILDING CODE 8-1

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  8-2 2025 CALIFORNIA EXISTING BUILDING CODE

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  8 ALTERATIONS—LEVEL 2

  User notes:

  About this chapter: Like Chapter 7, the purpose of this chapter is to provide detailed requirements and provisions to identify the required improvements in the existing building elements, building spaces and building structural system when a building is being altered. This chapter is distinguished from Chapters 7 and 9 by involving space reconfiguration that could be up to and including 50 percent of the area of the building. In contrast, Level 1 alterations (Chapter 7) do not involve space reconfiguration, and Level 3 alterations (Chapter 9) involve extensive space reconfiguration that exceeds 50 percent of the building area. Depending on the nature of alteration work, its location within the building, and whether it encompasses one or more tenants, improvements and upgrades could be required for the open floor penetrations, sprinkler system or the installation of additional means of egress such as stairs or fire escapes.

  SECTION 801—GENERAL

  801.1 Scope. Level 2 alterations as described in Section 603 shall comply with the requirements of this chapter.

  Exception: Buildings in which the reconfiguration is exclusively the result of compliance with the accessibility requirements of Section 306.7.1 shall be permitted to comply with Chapter 7.

  801.2 Alteration Level 1 compliance. In addition to the requirements of this chapter, all work shall comply with the requirements of Chapter 7.

  801.3 System installations. Requirements related to work area are not applicable where the Level 2 alterations are limited solely to one or more of the following:

  1. Mechanical systems, electrical systems, fire protection systems and abatement of hazardous materials.
  2. Windows, hardware, operating controls, electrical outlets and signs.
  3. Alterations undertaken for the primary purpose of increasing the accessibility of a facility.

  801.4 Compliance. New construction elements, components, systems and spaces shall comply with the requirements of the Califor- nia Building Code .

  Exceptions:

  1. Where windows are added they are not required to comply with the light and ventilation requirements of the California Building Code .

  2. Newly installed electrical equipment shall comply with the requirements of Section 806.

  3. The length of dead-end corridors in newly constructed spaces shall only be required to comply with the provisions of Section 804.8.

  4. The minimum ceiling height of the newly created habitable and occupiable spaces and corridors shall be 7 feet (2134 mm).

  5. Where provided in below-grade transportation stations, existing and new escalators shall be permitted to have a clear width of less than 32 inches (815 mm).

  6. New structural members and connections shall be permitted to comply with alternative design criteria in accordance with Section 302.

  SECTION 802—BUILDING ELEMENTS AND MATERIALS

  802.1 Scope. The requirements of this section are limited to work areas in which Level 2 alterations are being performed and shall apply beyond the work area where specified.

• CEBC § 5.106.5.4 High relevance — show source text

  5.106.5.4 Additions or alterations to existing buildings or parking facilities [A]. [BSC-CG] Existing buildings or parking facilities being modified by one of the following shall comply with Section 5.106.5.4.1 or 5.106.5.4.2. When EVSE is installed, accessible EVCS shall be provided in accordance with the California Building Code, Chapter 11B, Section 11B-228.3.

  1. When the scope of construction work includes an increase in power supply to an electric service panel as part of a parking facility addition or alteration.
  2. When a new photovoltaic system is installed covering existing parking spaces.
  3. When additions or alterations to existing buildings are triggered pursuant to code Section 301.3 and the scope of work includes an increase in power supply to an electric service panel.

  Exceptions:

  1. On a case-by-case basis where the local enforcing agency has determined compliance with this section is not feasible based upon one of the following conditions: a. Where there is no local utility power supply. b. Where the local utility is unable to supply adequate power. c. Where there is evidence suitable to the local enforcement agency substantiating that additional local utility infrastructure design requirements, directly related to the implementation of Section 5.106.5.3, may adversely impact the construction cost of the project. d. Where demonstrated as impracticable excluding local utility service or utility infrastructure issues.
  2. Remote parking facilities that do not have access to the building service panel.
  3. Parking area lighting upgrades where no trenching is part of the scope of work.
  4. Emergency repairs, including but not limited to water line break in parking facilities, natural disaster repairs, etc.

  5.106.5.4.1 Existing buildings or parking areas without previously installed EV capable infrastructure [A]. When EV capable infrastructure does not exist at an existing parking facility or building, and the parking facility or building undergoes an addition or alteration listed in Section 5.106.5.4, construction shall include electric vehicle charging in compliance with either Section 5.106.5.3 and associated Table 5.106.5.3.1, or Section 5.106.5.3.6 and associated Table 5.106.5.3.6 for the total number of actual parking spaces being added or altered.

  5.106.5.4.2 Existing buildings or parking areas with previously installed EV capable infrastructure [A]. When EV capable infrastructure is available at an existing parking facility or building, and the parking facility or building is undergoing an addition or alteration listed in Section 5.106.5.4, construction shall include electric vehicle charging in compliance with either Section 5.106.5.3 and associated Table 5.106.5.3.1, or Section 5.106.5.3.6 and associated Table 5.106.5.3.6. Install EVCS at all existing EV capable spaces, utilizing the existing allocated power and infrastructure for the total number of actual parking spaces being added or altered, prior to adding any new EV capable spaces. If the area being added or altered exceeds the existing EV capable capacity, allocated power and infrastructure, provide additional EV charging as needed to comply with this section.

• CEBC § 802.1 High relevance — show source text

  6. New structural members and connections shall be permitted to comply with alternative design criteria in accordance with Section 302.

  SECTION 802—BUILDING ELEMENTS AND MATERIALS

  802.1 Scope. The requirements of this section are limited to work areas in which Level 2 alterations are being performed and shall apply beyond the work area where specified.

  802.2 Vertical openings. Existing vertical openings shall comply with the provisions of Sections 802.2.1, 802.2.2 and 802.2.3.

  802.2.1 Existing vertical openings. Existing interior vertical openings connecting two or more floors shall be enclosed with approved assemblies having a fire-resistance rating of not less than 1 hour with approved opening protectives.

  Exceptions:

  1. Where vertical opening enclosure is not required by the California Building Code or the California Fire Code .
  2. Interior vertical openings other than stairways may be blocked at the floor and ceiling of the work area by installation of not less than 2 inches (51 mm) of solid wood or equivalent construction.
  3. The enclosure shall not be required where: 3.1. Connecting the main floor and mezzanines; or 3.2. All of the following conditions are met: 3.2.1. The communicating area has a low-hazard occupancy or has a moderate-hazard occupancy that is protected throughout by an automatic sprinkler system.

  3.2.2. The lowest or next-to-the-lowest level is a street floor.

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  ALTERATIONS—LEVEL 2

  3.2.3. The entire area is open and unobstructed in a manner such that it is reasonable to assume that a fire in any part of the interconnected spaces will be readily obvious to all of the occupants. 3.2.4. Exit capacity is sufficient to provide egress simultaneously for all occupants of all levels by considering all areas to be a single floor area for the determination of required exit capacity. 3.2.5. Each floor level, considered separately, has not less than one-half of its individual required exit capacity provided by an exit or exits leading directly out of that level without having to traverse another communicating floor level or be exposed to the smoke or fire spreading from another communicating floor level.

  4. Reserved.

  5. In Group B occupancies, a minimum 30-minute enclosure shall be provided to protect all vertical openings not exceeding three stories. This enclosure, or the enclosure specified in Section 802.2.1, shall not be required in the following locations: 5.1. Buildings not exceeding 3,000 square feet (279 m [2] ) per floor. 5.2. Buildings protected throughout by an approved automatic fire sprinkler system.

  6. In Group E occupancies, the enclosure shall not be required for vertical openings not exceeding two stories where the building is protected throughout by an approved automatic fire sprinkler system.

  7. In Group F occupancies, the enclosure shall not be required in the following locations: 7.1. Vertical openings not exceeding two stories. 7.2. Special-purpose occupancies where necessary for manufacturing operations and direct access is provided to not fewer than one protected stairway. 7.3. Buildings protected throughout by an approved automatic sprinkler system.

  8. Reserved.

• CEBC § 6.4.3.1.1 High relevance — show source text

  Revise Section 6.4.3.1.1 as follows:*

  6.4.3.1.1* Pipe joints shall not be located under foundation footings. The pipe under the building or building foundation shall not contain mechanical joints.

  Exceptions:

  2. Where allowed in accordance with Section 6.4.3.1.

  3. Alternate designs may be utilized where designed by a registered professional engineer and approved by the enforcing

  agency.

  Revise Section 9.2.1.16 as follows:

  9.2.1.16 Exterior columns under 10 ft [2] (0.93m [2] ) in total area, formed by studs or wood joist, with no sources of ignition within the column, supporting exterior canopies that are fully protected with a sprinkler system, shall not require sprinkler protection.

  Revise Section 9.2.3.1 as follows:*

  9.2.3.1* Sprinklers shall be permitted to be omitted where the exterior canopies, roofs, portecocheres, balconies, decks or similar projections are constructed with materials that are noncombustible, limited-combustible or fire retardant treated wood as defined in NFPA 703, Standard for Fire Retardant–Treated Wood and Fire-Retardant Coatings for Building Materials.

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  REFERENCED STANDARDS

  Delete Section A.9.2.3.1 of Annex

  Revise Section 9.2.3.2

  9.2.3.2 Sprinklers shall be permitted to be omitted from below the canopies, roofs, balconies, decks or similar projections are combustible construction, provided the exposed finish material on the roof, or canopy is noncombustible, limited-combustible or fire retardant treated wood as defined in NFPA 703, Standard for Fire Retardant–Treated Wood and Fire-Retardant Coatings for Building Materials, and the roofs or canopies contains only sprinklered concealed spaces or any of the following unsprinklered combustible concealed spaces:

  (1) Combustible concealed spaces filled entirely with noncombustible insulation. (2) Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings are directly attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft [3] (4.5 m [3] ) or less in volume, including space below insulation that is laid directly on top or within the ceiling joists in an otherwise sprinklered attic [See 11.2.3.1.5.2(9) ]. (3) Concealed spaces over isolated small roofs or canopies not exceeding 55 ft [2] (5.1 m [2] ).

  Delete language to section 9.2.3.3 and reserve section number. 9.2.3.3 Reserved.

  Revise Section 9.3.19.1 as follows:*

• CEBC § 802.3 High relevance — show source text

  Exception: Where stairway enclosure is not required by the California Building Code or the California Fire Code .

  802.3 Smoke compartments. In Group I-2 occupancies where the work area is on a story used for sleeping rooms for more than 30 care recipients, the story shall be divided into not less than two compartments by smoke barrier walls in accordance with Section 407.5 of the California Building Code as required for new construction.

  802.4 Interior finish. The interior finish and trim of walls and ceilings in exits and corridors in any work area shall comply with the requirements of the California Building Code .

  Exception: Existing materials that do not comply with the requirements of the California Building Code shall be permitted to be treated with an approved fire-retardant coating in accordance with the manufacturer’s instructions to achieve the required classification. Compliance with this section shall be demonstrated by testing the fire-retardant coating on the same material and achieving the required performance. Where the same material is not available, testing on a similar material shall be permitted.

  802.4.1 Supplemental interior finish requirements. Where the work area on any floor exceeds 50 percent of the floor area, Section 802.4 shall apply to the interior finish and trim in exits and corridors serving the work area throughout the floor.

  Exception: Interior finish within tenant spaces that are entirely outside the work area.

  802.5 Guards. The requirements of Sections 802.5.1 and 802.5.2 shall apply in all work areas.

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  ALTERATIONS—LEVEL 2

  802.5.1 Minimum requirement. Every portion of a floor, such as a balcony or a loading dock, that is more than 30 inches (762 mm) above the floor or grade below and is not provided with guards, or those in which the existing guards are judged to be in danger of collapsing, shall be provided with guards.

  802.5.2 Design. Where there are no guards or where existing guards must be replaced, the guards shall be designed and installed in accordance with the California Building Code .

  802.6 Fire-resistance ratings. Where approved by the code official, buildings where an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2 of the California Building Code has been added, and the building is now sprinklered throughout, the required fire-resistance ratings of building elements and materials shall be permitted to meet the requirements of the current building code. The building is required to meet the other applicable requirements of the California Building Code .

  Plans, investigation and evaluation reports, and other data shall be submitted indicating which building elements and materials the applicant is requesting the code official to review and approve for determination of applying the current building code fire-resistance ratings. Any special construction features, including fire-resistance-rated assemblies and smoke-resistive assemblies, conditions of occupancy, means-of-egress conditions, fire code deficiencies, approved modifications or approved alternative materials, design and methods of construction, and equipment applying to the building that impact required fire-resistance ratings shall be identified in the evaluation reports submitted.

  SECTION 803—FIRE PROTECTION

  803.1 Scope. The requirements of this section shall be limited to work areas in which Level 2 alterations are being performed, and where specified they shall apply throughout the floor on which the work areas are located or otherwise beyond the work area.

• CEBC § 11B-8 High relevance — show source text

  1. A primary entrance to the building or facility, 2. Toilet and bathing facilities serving the area, 3. Drinking fountains serving the area,

  4. Public telephones serving the area, and

  11B-8 2025 CALIFORNIA BUILDING CODE

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  ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMMODATIONS, COMMERCIAL BUILDINGS AND PUBLIC HOUSING

  5. Signs.

  Note: The language in this exception, which refers to the “immediately preceding edition of the California Building Code,” shall permit a reference back to one CBC edition only and is not accumulative to prior editions. 3. Additions or alterations to meet accessibility requirements consisting of one or more of the following items shall be limited to the actual scope of work of the project and shall not be required to comply with Section 11B-202.4: 1. Altering one building entrance. 2. Altering one existing toilet facility. 3. Altering existing elevators. 4. Altering existing steps. 5. Altering existing handrails. 4. Alterations solely for the purpose of barrier removal undertaken pursuant to the requirements of the Americans with Disabil- ities Act (Public Law 101-336, 28 C.F.R. Section 36.304) or the accessibility requirements of this code as those requirements or regulations now exist or are hereafter amended including, but not limited to, one or more of the following items shall be limited to the actual scope of work of the project and shall not be required to comply with Section 11B-202.4: 1. Installing ramps. 2. Making curb cuts in sidewalks and entrance. 3. Repositioning shelves. 4. Rearranging tables, chairs, vending machines, display racks and other furniture. 5. Repositioning telephones. 6. Adding raised markings on elevator control buttons. 7. Installing flashing alarm lights. 8. Widening doors. 9. Installing offset hinges to widen doorways. 10. Eliminating a turnstile or providing an alternative accessible route. 11. Installing accessible door hardware. 12. Installing grab bars in toilet stalls. 13. Rearranging toilet partitions to increase maneuvering space. 14. Insulating lavatory pipes under sinks to prevent burns. 15. Installing a raised toilet seat. 16. Installing a full-length bathroom mirror. 17. Repositioning the paper towel dispenser in a bathroom. 18. Creating designated accessible parking spaces. 19. Removing high-pile, low-density carpeting. 5. Alterations of existing parking lots by resurfacing and/or restriping shall be limited to the actual scope of work of the project and shall not be required to comply with Section 11B-202.4. 6. The addition or replacement of signs and/or identification devices shall be limited to the actual scope of work of the project and shall not be required to comply with Section 11B-202.4. 7. _Projects consisting only of heating, ventilation, air conditioning, reroofing,

• CEBC § 317.1.2.1 High relevance — show source text

  The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing public buildings currently under the jurisdiction of DSA-SS.

  317.1.2.1 Reference to other chapters. For public schools, where reference within this chapter is made to sections in Chapters 16, 17, 18, 19, 21 or 22 of the California Building Code, the provisions in Chapters 16A, 17A, 18A, 19A, 21A and 22A of the California Building Code, respectively, shall apply instead.

  317.1.3 Community college buildings. [DSA-SS/CC] The provisions of Sections 317 through 323 establish minimum standards for earthquake evaluation and design for the rehabilitation of existing buildings for use as community college buildings under the jurisdiction of the Division of the State Architect—Structural Safety/Community Colleges [DSA-SS/CC], refer to Section 1.9.2.2.

  The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing community college buildings currently under the jurisdiction of DSA-SS/CC.

  317.1.3.1 Reference to other chapters. For community colleges, where reference within this chapter is made to sections in Chapters 17 or 18 of the California Building Code, the provisions in Chapters 17A and 18A of the California Building Code, respectively, shall apply instead.

  317.2 Scope. All alterations, structurally connected additions and/or repairs to existing structures or portions thereof shall, at a minimum, be designed and constructed to resist the effects of seismic ground motions as provided in this section. The structural system shall be evaluated by a registered design professional and, if not meeting or exceeding the minimum seismic design performance requirements of this section, shall be retrofitted in compliance with these requirements.

  Exception: Those structures for which Section 317.3 determines that assessment is not required, or for which Section 317.4 determines that retrofit is not needed, then only the requirements of Section 317.11 apply.

  317.3 Applicability.

  317.3.1 Existing state-owned buildings. [BSC, DSA-SS] For existing state-owned structures including all buildings owned by the University of California and the California State University, the requirements of Section 317 apply whenever the structure is to be retrofitted, repaired or modified and any of the following apply: 1. Total construction cost, not including cost of furnishings, fixtures and equipment, or normal maintenance, for the building exceeds 25 percent of the construction cost for the replacement of the existing building. The changes are cumulative for past modifications to the building that occurred after adoption of the 1995 California Building Code and did not require seismic retrofit.

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  PROVISIONS FOR ALL COMPLIANCE METHODS

• CEBC § 5-6 High relevance — show source text

  For office and retail buildings the maximum allowed kVA to be utilized for EV capable spaces is 25 percent.|

  5-6 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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  NONRESIDENTIAL MANDATORY MEASURES

  5.106.5.3.6.1 Receptacle configurations. 208/240V EV charging receptacles shall comply with one of the following configurations:

  1. For 20-ampere receptacles, NEMA 6-20R.
  2. For 30-ampere receptacles, NEMA 14-30R.
  3. For 50-ampere receptacles, NEMA 14-50R.

  5.106.5.3.6.2 EV Charger connectors. EV chargers shall be equipped with SAE J1772 with a maximum output 240 Volts AC or SAE J3400 connectors. When using level 2 SAE J3400 connectors, supplied by a 480 V 3-phase service, at least 20 percent of the EV charger connectors shall be SAE J1772 with a maximum output 240 Volts AC.

  5.106.5.3.6.3 Raceway capacity requirements. To allow for future upgrades to the electrical conductors serving low power Level 2 charging receptacles, the listed raceway serving such receptacles shall be sized to allow the installation of a dedicated 208/240-volt 40-ampere branch circuit. Where no raceway is used, the conductors shall be sized to accommodate a 208/240-volt 40-ampere receptacle.

  5.106.5.4 Additions or alterations to existing buildings or parking facilities [A]. [BSC-CG] Existing buildings or parking facilities being modified by one of the following shall comply with Section 5.106.5.4.1 or 5.106.5.4.2. When EVSE is installed, accessible EVCS shall be provided in accordance with the California Building Code, Chapter 11B, Section 11B-228.3.

  1. When the scope of construction work includes an increase in power supply to an electric service panel as part of a parking facility addition or alteration.
  2. When a new photovoltaic system is installed covering existing parking spaces.
  3. When additions or alterations to existing buildings are triggered pursuant to code Section 301.3 and the scope of work includes an increase in power supply to an electric service panel.

  Exceptions:

  1. On a case-by-case basis where the local enforcing agency has determined compliance with this section is not feasible based upon one of the following conditions: a. Where there is no local utility power supply. b. Where the local utility is unable to supply adequate power. c. Where there is evidence suitable to the local enforcement agency substantiating that additional local utility infrastructure design requirements, directly related to the implementation of Section 5.106.5.3, may adversely impact the construction cost of the project. d. Where demonstrated as impracticable excluding local utility service or utility infrastructure issues.
  2. Remote parking facilities that do not have access to the building service panel.
  3. Parking area lighting upgrades where no trenching is part of the scope of work.
  4. Emergency repairs, including but not limited to water line break in parking facilities, natural disaster repairs, etc.
• CEBC § 140.4 Medium relevance — show source text

  ** HVAC systems with DDC controllers shall use controller logic originating from a programming library based on sequences of operation from ASHRAE Guideline 36 in accordance with the following:

  1. Requirement applies to all controllers that are capable of being programmed in the field; and
  2. Requirement applies to the entirety or all applicable portions of equipment control for configurations included in the programming library; and
  3. The programming library shall be certified to the Energy Commission as meeting the requirements of Reference Joint Appendix JA18. Exception to Section 140.4(r)3: Nonprogrammable (configurable-only) controllers for zone terminal units shall follow applicable ASHRAE Guideline 36 zone sequences referenced in Reference Joint Appendix JA18, Table 18.3-1, but are not subject to certification requirements.

  Exception 1 to Section 140.4(r): Logic from the certified programming library modified to suit application-specific operations that are not included in ASHRAE Guideline 36 sequences.

  Exception 2 to Section 140.4(r): Systems serving healthcare facilities.

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  NONRESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES—PERFORMANCE AND PRESCRIPTIVE

  COMPLIANCE APPROACHES FOR ACHIEVING ENERGY EFFICIENCY

  (s) Mechanical heat recovery.

  1. Simultaneous mechanical heat recovery. A. Simultaneous mechanical heat recovery is required for newly constructed buildings that meet either i or ii: i. CHL + 0.1 × CLL ≥ 200 tons and SWHCAP + HCAP ≥ 2200 kBtuh; or

  ii. CCAP ≥ 300 tons and SWHCAP + 0.1 × HCAP ≥ 700 kBtuh

  where:

  CCAP = Design capacity of all mechanical cooling systems. CHL = Coincident peak cooling load of all spaces with a design equipment power density > 5 watts/ft [2] and a minimum outdoor airflow requirement < 0.5 cfm/ft [2] (i.e., high load spaces).

  CLL = CCAP - CHL. If the design includes capacity for future cooling systems, then assume 20 percent of future systems serve high load spaces.

  SWHCAP = Design capacity of all service water heating (SWH) systems, excluding systems expected to operate less than 5 hours per week, such as instant-hot water systems for emergency eyewash stations.

  HCAP = Design capacity of all space-heating systems. B. The heat recovery system shall include a heat recovery chiller, or other means, capable of transferring the lesser of the following from spaces in cooling to spaces in heating and/or to the SWH system: i. 25 percent of the peak heat rejection of the cooling system. ii. 25 percent of (SWHCAP + HCAP) Exception 1 to Section 140.4(s)1: Laboratory buildings with exhaust air heat recovery systems meeting Section 140.9(c)6. Exception 2 to Section 140.4(s)1: Buildings in Climate Zone 15 with SWHCAP < 600 kBtuh. 2. Heat recovery for service water heating. If the building is required to have simultaneous mechanical heat recovery by Section 140.4(s)1, and SWHCAP ≥ 500 kBtuh, then the heat recovery system shall also heat or preheat the service hot water. The heat recovery system shall have the capacity to transfer the smaller of: A.

• CEBC § 8-706.1.3 Medium relevance — show source text

  Exceptions:

  1. Alternative standards may be used on a case-by-case basis when approved by the authority having jurisdiction. It shall be permitted to exceed the strength limitation of 100 psi in Section A108.2 of the CEBC when test data and building configuration supports higher values subject to the approval of the authority having jurisdiction.
  2. CEBC Section A102.2 shall not apply to Qualified Historical Buildings in Risk Category III buildings and other structures whose primary occupancies are public assembly with an occupancy load greater than 300.

  8-706.1.3 All deviations from the detailing provisions of the lateral-force-resisting systems shall be evaluated for stability and the ability to maintain load-carrying capacity at the expected inelastic deformations.

  8-706.2 Existing building performance. The seismic resistance may be based upon the ultimate capacity of the structure to perform, giving due consideration to ductility and reserve strength of the lateral-force-resisting system and materials while maintaining a reasonable factor of safety. Broad judgment may be exercised regarding the strength and performance of materials not recognized by regular code requirements. (See Chapter 8-8, Archaic Materials and Methods of Construction.)

  8-706.2.1 All structural materials or members that do not comply with detailing and proportioning requirements of the regular code shall be evaluated for potential seismic performance and the consequence of non-compliance. All members that would be reasonably expected to fail and lead to collapse or life threatening injury when subjected to seismic demands shall be judged unacceptable, and appropriate structural strengthening shall be developed.

  8-706.3 Load path. A complete and continuous load path, including connections, from every part or portion of the structure to the ground shall be provided for the required forces. It shall be verified that the structure is adequately tied together to perform as a unit when subjected to earthquake forces.

  8-706.4 Parapets. Parapets and exterior decoration shall be investigated for conformance with regular code requirements for anchorage and ability to resist prescribed seismic forces.

  An exception to regular code requirements shall be permitted for those parapets and decorations which are judged not to be a hazard to life safety.

  8-706.5 Nonstructural features. Nonstructural features of historical structure, such as exterior veneer, cornices and decorations, which might fall and create a life safety hazard in an earthquake, shall be evaluated. Their ability to resist seismic forces shall be verified, or the feature shall be strengthened with improved anchorage when appropriate.

  8-706.5.1 Partitions and ceilings of corridors and stairways serving an occupant load of 30 or more shall be investigated to determine their ability to remain in place when the building is subjected to earthquake forces.

  8-706.5.2 Seismic forces used to evaluate and improve nonstructural components and their anchorage, where required, shall comply with ASCE 41 or need not exceed 0.75 times the seismic forces prescribed by the requirements of the regular code.

  14 2025 CALIFORNIA HISTORICAL BUILDING CODE

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  8-8 ARCHAIC MATERIALS AND METHODS OF CONSTRUCTION

  SECTION 8-801 — PURPOSE, INTENT AND SCOPE

• CEBC § 717.5.4 Medium relevance — show source text

  717.5.4 Fire partitions. In other than Group A, E, I and R occupancies, high-rise buildings, and other applications listed in Section 1.11 regulated by the Office of the State Fire Marshal, ducts and air transfer openings that penetrate fire partitions shall be protected with listed fire dampers installed in accordance with their listing.

  Exceptions: In occupancies other than Group H and L, fire dampers are not required where any of the following apply:

  1. Corridor walls in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2 and the duct is protected as a through penetration in accordance with Section 714.
  2. Tenant partitions in covered and open mall buildings where the walls are not required by provisions elsewhere in the code to extend to the underside of the floor or roof sheathing, slab or deck above.
  3. The duct system is constructed of approved materials in accordance with the California Mechanical Code and the duct penetrating the wall complies with all of the following requirements: 3.1. The duct shall not exceed 100 square inches (0.06 m [2] ). 3.2. The duct shall be constructed of steel not less than 0.0217 inch (0.55 mm) in thickness.

  3.3. The duct shall not have openings that communicate the corridor with adjacent spaces or rooms. 3.4. The duct shall be installed above a ceiling. 3.5. The duct shall not terminate at a wall register in the fire-resistance-rated wall. 3.6. A minimum 12-inch-long (305 mm) by 0.060-inch-thick (1.52 mm) steel sleeve shall be centered in each duct opening. The sleeve shall be secured to both sides of the wall and all four sides of the sleeve with minimum 1 [1] / 2 -inch by 1 [1] / 2 -inch by 0.060-inch (38 mm by 38 mm by 1.52 mm) steel retaining angles. The retaining angles shall be secured to the sleeve and the wall with No. 10 (M5) screws. The annular space between the steel sleeve and the wall opening shall be filled with mineral wool batting on all sides. 4. Such walls are penetrated by ducted HVAC systems, have a required fire-resistance rating of 1 hour or less, and are in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2. For the purposes of this exception, a ducted HVAC system shall be a duct system for conveying supply, return or

  2025 CALIFORNIA BUILDING CODE 7-37

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  FIRE AND SMOKE PROTECTION FEATURES

  exhaust air as part of the structure’s HVAC system. Such a duct system shall be constructed of sheet steel not less than No. 26 gage thickness and shall be continuous from the air-handling appliance or equipment to the air outlet and inlet terminals.

  For Group A, E, I and R occupancies, high-rise buildings, and other applications listed in Section 1.11 regulated by the Office of the State Fire Marshal, ducts and air transfer openings that penetrate fire partitions shall be protected with listed fire dampers installed in accordance with their listings.

• CEBC § 1.1.7 Medium relevance — show source text

  1.1.7 Order of precedence and use.

  1.1.7.1 Differences. In the event of any differences between these building standards and the standard reference documents, the text of these building standards shall govern.

  1.1.7.2 Specific provisions. Where a specific provision varies from a general provision, the specific provision shall apply.

  1.1.7.3 Conflicts. When the requirements of this code conflict with the requirements of any other part of the California Building Standards Code, Title 24 the most restrictive requirements shall prevail.

  1.1.7.3.1 Detached one- and two-family dwellings. Detached one- and two-family dwellings, lodging houses, live/work units, townhouses not more than three stories above grade plane in height with a separate means of egress, and their accessory structures, may be designed and constructed in accordance with the California Residential Code or the California Building Code, but not both, unless the proposed structure(s) or element(s) exceed the design limitations established in the California Residential Code, and the code user is specifically directed by the California Residential Code to use the California Building Code.

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  ADMINISTRATION

  1.1.8 City, county, or city and county amendments, additions or deletions. The provisions of this code do not limit the authority of city, county, or city and county governments to establish more restrictive and reasonably necessary differences to the provisions contained in this code pursuant to complying with Section 1.1.8.1. The effective date of amendments, additions or deletions to this code by a city, county, or city and county filed pursuant to Section 1.1.8.1 shall be the date filed. However, in no case shall the amendments, additions or deletions to this code be effective any sooner than the effective date of this code.

  Local modifications shall comply with Health and Safety Code Section 18941.5 for Building Standards Law, Health and Safety Code Section 17958 for State Housing Law or Health and Safety Code Section 13869.7 for Fire Protection Districts.

  1.1.8.1 Findings and filings. 1. The city, county, or city and county shall make express findings for each amendment, addition or deletion based upon climatic, topographical or geological conditions.

  Exception: Hazardous building ordinances and programs mitigating unreinforced masonry buildings. 2. The city, county, or city and county shall file the amendments, additions or deletions expressly marked and identified as to the applicable findings. Cities, counties, cities and counties, and fire departments shall file the amendments, additions or deletions, and the findings with the California Building Standards Commission at 2525 Natomas Park Drive, Suite 130, Sacramento, CA 95833.

  3. Findings prepared by fire protection districts shall be ratified by the local city, county, or city and county and filed with the California Department of Housing and Community Development, Division of Codes and Standards, P.O. Box 278180, Sacramento, CA 95827-8180 or 9342 Tech Center Drive, Suite 500, Sacramento, CA 95826-2581.

• CEBC § 709.3 Medium relevance — show source text

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  FIRE AND SMOKE PROTECTION FEATURES

  709.3 Fire-resistance rating. A 1-hour fire-resistance rating is required for smoke barriers.

  Exception: Smoke barriers constructed of minimum 0.10-inch-thick (2.5 mm) steel in Group I-3 buildings.

  709.4 Continuity. Smoke barriers shall form an effective membrane continuous from the top of the foundation or floor/ceiling assembly below to the underside of the floor or roof sheathing, deck or slab above, including continuity through concealed spaces, such as those found above suspended ceilings, and interstitial structural and mechanical spaces. The supporting construction shall be protected to afford the required fire-resistance rating of the wall or floor supported in buildings of other than Type IIB, IIIB or VB construction. Smoke-barrier walls used to separate smoke compartments shall comply with Section 709.4.1. Smoke-barrier walls used to enclose areas of refuge in accordance with Section 1009.6.4 or to enclose elevator lobbies in accordance with Section 405.4.3, 3007.6.2, or 3008.6.2 shall comply with Section 709.4.2.

  Exception: Smoke-barrier walls are not required in interstitial spaces where such spaces are designed and constructed with ceilings or exterior walls that provide resistance to the passage of fire and smoke equivalent to that provided by the smoke-barrier walls.

  709.4.1 Smoke-barrier assemblies separating smoke compartments. Smoke-barrier assemblies used to separate smoke compartments shall form an effective membrane enclosure that is continuous from an outside wall or smoke barrier wall to an outside wall or another smoke barrier wall and to the horizontal assemblies.

  709.4.2 Smoke-barrier walls enclosing areas of refuge or elevator lobbies. Smoke-barrier walls used to enclose areas of refuge in accordance with Section 1009.6.4, or to enclose elevator lobbies in accordance with Section 405.4.3, 3007.6.2, or 3008.6.2, shall form an effective membrane enclosure that terminates at a fire barrier wall having a fire resistance rating not less than 1 hour, another smoke barrier wall or an outside wall. A smoke and draft control door assembly as specified in Section 716.2.2.1.1 shall not be required at each elevator hoistway door where protected by an elevator lobby, at each exit door opening into a protected lobby or at each exit doorway between an area of refuge and the exit enclosure.

  709.5 Openings. Openings in a smoke barrier shall be protected in accordance with Section 716.

  Exceptions:

  1. In Group I- 2, R-2.1 and ambulatory care facilities, where a pair of opposite-swinging doors are installed across a corridor in accordance with Section 709.5.1, the doors shall not be required to be protected in accordance with Section 716. The doors shall be close fitting within operational tolerances, and shall not have a center mullion or undercuts in excess of [3] / 4 inch (19.1 mm), louvers or grilles. The doors shall have head and jamb stops, and astragals or rabbets at meeting edges. Positive latching devices are not required. Factory-applied or field-applied protective plates are not required to be labeled. Doors installed across corridors shall comply with Section 1010.1.1.
• CEBC § 313.6.1.7 Medium relevance — show source text

  313.6.1.7 Release mechanism test. The release mechanism of retractable exit ladder devices shall operate with an average applied force of not more than 5 pounds (22.2N) for hand-operated releasing mechanisms and an average applied force of not more than 25 pounds (111N) for foot-pedal types of releasing mechanisms. For these tests, a force gauge shall be applied to the release mechanism, and the average of three consecutive readings shall be computed.

  313.6.1.8 Low temperature operation test. Representative samples of the exit ladder devices shall be subjected to a temperature of -40ºC in an environmental chamber for a period of 24 hours. The release mechanism shall be operated immediately upon removal from the chamber. The ladder device shall function as intended without any restriction of operation.

  313.7 Doors and openings. Exit doors and openings shall meet the requirements of Sections 1008.1.2, 1008.8.1.8, 1008.1.9 and 708.6 of the California Building Code. Doors shall not reduce the required width of stairway more than 6 inches (152 mm) when open. Transoms and openings other than doors from corridors to rooms shall be fixed closed and shall be covered with a minimum of [3] / 4 -inch (19 mm) plywood or [1] / 2 -inch (13 mm) gypsum wallboard or equivalent material.

  Exceptions: 1. Existing solid-bonded wood-core doors 1 [3] / 8 inches thick (34.9 mm), or their equivalent may be continued in use. 2. Where the existing frame will not accommodate a door complying with Section 708.6 of the California Building Code, a 1 [3] / 8 - inch-thick (35 mm) solid-bonded wood-core door may be used.

  313.8 Exit signs. Every exit doorway or change of direction of a corridor shall be marked with a well-lighted exit sign having letters at least 5 inches (127 mm) high.

  313.9 Enclosure of vertical openings. Elevators, shafts, ducts and other vertical openings shall be enclosed as required for stairways in Section 313.4 or by wired glass set in metal frames. Doors shall be noncombustible or as regulated in Section 313.4.

  313.10 Separation of occupancies. Occupancy separations shall be provided as specified in Section 508 of the California Building Code. Lobbies and public dining rooms, not including cocktail lounges, shall not require a separation if the kitchen is so separated from the dining room. Every room containing a boiler or central heating plant shall be separated from the rest of the building by not less than a one-hour fire-resistive occupancy separation.

  Exception: A separation shall not be required for such rooms with equipment serving only one dwelling unit.

  313.11 Equivalent protection. In lieu of the separation of occupancies required by Section 313.10, equivalent protection may be permitted when approved by the enforcement agency.

• CEBC § 1.8.7.2 Medium relevance — show source text

  1.8.7.2 Local building departments. The building department of any city, county, or city and county may approve alternates for use in the erection, construction, reconstruction, movement, enlargement, conversion, alteration, repair, removal, demolition or arrangement of apartments, condominiums, hotels, motels, lodging houses, dwellings or accessory structures, except for the following: 1. Structures located in mobilehome parks as defined in California Health and Safety Code Section 18214. 2. Structures located in special occupancy parks as defined in California Health and Safety Code Section 18862.43. 3. Factory-built housing as defined in California Health and Safety Code Section 19971.

  1.8.7.2.1 Approval of alternates. The consideration and approval of alternates by a local building department shall comply with the following procedures and limitations: 1. The approval shall be granted on a case-by-case basis. 2. Evidence shall be submitted to substantiate claims that the proposed alternate, in performance, safety and protection of life and health, conforms to, or is at least equivalent to, the standards contained in this code and other rules and regulations promulgated by the Department of Housing and Community Development.

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  ADMINISTRATION

  3. The local building department may require tests performed by an approved testing agency at the expense of the owner or owner’s agent as proof of compliance. 4. If the proposed alternate is related to accessibility in covered multifamily dwellings or in facilities serving covered multifam- ily dwellings as defined in Chapter 2, the proposed alternate must also meet the threshold set for equivalent facilitation as defined in Chapter 2.

  For additional information regarding approval of alternates by a building department pursuant to the State Housing Law, see Cali- fornia Health and Safety Code Section 17951(e) and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 1.

  1.8.7.3 Department of Housing and Community Development. The Department of Housing and Community Development may approve alternates for use in the erection, construction, reconstruction, movement, enlargement, conversion, alteration, repair, removal or demolition of apartments, condominiums, hotels, motels, lodging houses, dwellings or an accessory thereto and permanent buildings in mobilehome parks and special occupancy parks. The consideration and approval of alternates shall comply with the following: 1. The department may require tests at the expense of the owner or owner’s agent to substantiate compliance with the California Building Standards Code. 2. The approved alternate shall, for its intended purpose, be at least equivalent in performance and safety to the materials, designs, tests or methods of construction prescribed by this code.

  SECTION 1.8.8—APPEALS BOARD

• CEBC § 408.3.8 Medium relevance — show source text

  Exceptions:

  1. Interior exit stairways and ramps in Group I-3 occupancies in accordance with the provisions of Section 408.3.8 of the California Building Code.
  2. Interior exit stairways within an atrium enclosed in accordance with Section 404.6 of the California Building Code .
  3. Interior exit stairways in accordance with Section 510.2. 4. Fixed guideway transit stations, constructed in accordance with Section 443.

  1023.3 Termination. Interior exit stairways and ramps shall terminate at an exit discharge or a public way.

  Exception: A combination of interior exit stairways, interior exit ramps and exit passageways, constructed in accordance with Sections 1023.2, 1023.3.1 and 1024, respectively, and forming a continuous protected enclosure, shall be permitted to extend an interior exit stairway or ramp to the exit discharge or a public way.

  1023.3.1 Extension. Where interior exit stairways and ramps are extended to an exit discharge or a public way by an exit passageway, the interior exit stairway and ramp shall be separated from the exit passageway by a fire barrier constructed in accordance with Section 707 or a horizontal assembly constructed in accordance with Section 711, or both. The fire-resistance rating shall be not less than that required for the interior exit stairway and ramp. A fire door assembly complying with Section 716 shall be installed in the fire barrier to provide a means of egress from the interior exit stairway and ramp to the exit passageway. Openings in the fire barrier other than the fire door assembly are prohibited. Penetrations of the fire barrier are prohibited.

  Exceptions:

  1. Penetrations of the fire barrier in accordance with Section 1023.5 shall be permitted.
  2. Separation between an interior exit stairway or ramp and the exit passageway extension shall not be required where there are no openings into the exit passageway extension.
  3. Separation between an interior exit stairway or ramp and the exit passageway extension shall not be required where the interior exit stairway and the exit passageway extension are pressurized in accordance with Section 909.20.4.

  1023.4 Openings. Interior exit stairway and ramp opening protectives shall be in accordance with the requirements of Section 716.

  Openings in interior exit stairways and ramps other than unprotected exterior openings shall be limited to those required for exit access to the enclosure from normally occupied spaces and for egress from the enclosure.

  Elevators shall not open into interior exit stairways and ramps.

  1023.5 Penetrations. Penetrations into or through interior exit stairways and ramps are prohibited except for the following:

  1. Equipment and ductwork necessary for independent ventilation or pressurization.

  2. Fire protection systems.

  3. Security systems.

  4. Two-way communication systems.

  5. Electrical raceway for fire department communication systems.

  6. Electrical raceway serving the interior exit stairway and ramp and terminating at a steel box not exceeding 16 square inches (0.010 m [2] ).

  7. Structural elements, such as beams or joists, supporting the interior exit stairway or ramp or enclosure.

  8. Structural elements, such as beams or joists, supporting a roof at the top of the interior exit stairway or ramp.

  Such penetrations shall be protected in accordance with Section 714. There shall not be penetrations or communication openings, whether protected or not, between adjacent interior exit stairways and ramps.

• CEBC § 11B-211.4 Medium relevance — show source text

  Exception: Where 50 percent of the drinking fountains yields a fraction, 50 percent shall be permitted to be rounded up or down provided that the total number of drinking fountains complying with Section 11B- 211 equals 100 percent of drinking fountains.

  11B-211.4 Bottle-filling stations. Where bottle-filling stations are provided they shall comply with Section 11B-602.10.

  Exception: In detention or correctional facilities, bottle-filling stations only serving holding or housing cells not required to comply with Section 11B-232 shall not be required to comply with Section 11B-211.4.

  SECTION 11B- 212—KITCHENS, KITCHENETTES, WET BARS AND SINKS

  11B- 212.1 General. Where provided, kitchens, kitchenettes, wet bars and sinks shall comply with Section 11B- 212 .

  11B- 212.2 Kitchens, kitchenettes and wet bars. Kitchens, kitchenettes and wet bars shall comply with Section 11B- 804 .

  11B- 212.3 Sinks. Where sinks are provided, at least 5 percent, but no fewer than one, of each type provided in each accessible room or space shall comply with Section 11B- 606 .

  Exceptions:

  1. Mop, service or scullery sinks shall not be required to comply with Section 11B- 212.3. 2. Scrub sinks, as defined in California Plumbing Code Section 221.0, shall not be required to comply with Section 11B-606.

  SECTION 11B- 213—TOILET FACILITIES AND BATHING FACILITIES

  11B- 213.1 General. Where toilet facilities and bathing facilities are provided, they shall comply with Section 11B- 213. Where toilet facilities and bathing facilities are provided in facilities permitted by Section 11B- 206.2.3 Exception 1 not to connect stories by an accessible route, toilet facilities and bathing facilities shall be provided on a story connected by an accessible route to an accessible entrance.

  11B-213.1.1 Toilet facilities for designated user groups. Where separate toilet facilities are provided for the exclusive use of sepa- rate user groups, the toilet facilities serving each user group shall comply with Section 11B-213.

  11B- 213.2 Toilet rooms and bathing rooms. Where toilet rooms are provided, each toilet room shall comply with Section 11B- 603. Where bathing rooms are provided, each bathing room shall comply with Section 11B- 603 .

  Exceptions:

  1. In alterations where it is technically infeasible to comply with Section 11B- 603, altering existing toilet or bathing rooms shall not be required where a single unisex (single-user or family) toilet room or bathing room complying with Section 11B- 213.2.1 is provided and located in the same area and on the same floor as existing inaccessible toilet or bathing

  rooms.

  2. Reserved.
• CEBC § 213.1 Medium relevance — show source text

  SECTION 11B- 213—TOILET FACILITIES AND BATHING FACILITIES

  11B- 213.1 General. Where toilet facilities and bathing facilities are provided, they shall comply with Section 11B- 213. Where toilet facilities and bathing facilities are provided in facilities permitted by Section 11B- 206.2.3 Exception 1 not to connect stories by an accessible route, toilet facilities and bathing facilities shall be provided on a story connected by an accessible route to an accessible entrance.

  11B-213.1.1 Toilet facilities for designated user groups. Where separate toilet facilities are provided for the exclusive use of sepa- rate user groups, the toilet facilities serving each user group shall comply with Section 11B-213.

  11B- 213.2 Toilet rooms and bathing rooms. Where toilet rooms are provided, each toilet room shall comply with Section 11B- 603. Where bathing rooms are provided, each bathing room shall comply with Section 11B- 603 .

  Exceptions:

  1. In alterations where it is technically infeasible to comply with Section 11B- 603, altering existing toilet or bathing rooms shall not be required where a single unisex (single-user or family) toilet room or bathing room complying with Section 11B- 213.2.1 is provided and located in the same area and on the same floor as existing inaccessible toilet or bathing

  rooms.

  2. Reserved.

  3. Where multiple single user portable toilet or bathing units are clustered at a single location 5 percent, but no fewer than one, of the toilet units and bathing units at each cluster shall comply with Section 11B- 603. Portable toilet units and bathing units complying with Section 11B- 603 shall be identified by the International Symbol of Accessibility complying with Section 11B- 703.7.2.1.

  4. Where multiple single user toilet rooms are clustered at a single location, 50 percent, but no fewer than one, of the single user toilet rooms for each use at each cluster shall comply with Section 11B- 603 .

  11B- 213.2.1 Unisex ( single-user or family) toilet and unisex (single-user or family) bathing rooms. Unisex (single-user or family) toilet rooms shall contain not more than one lavatory, and not more than two water closets without urinals or one water closet and one urinal. Unisex (single-user or family) bathing rooms shall contain one shower or one shower and one bathtub, one lavatory, and one water closet. Doors to unisex (single-user or family) toilet rooms and unisex (single-user or family) bathing rooms shall have privacy latches.

  11B-213.2.2 Unisex (Patient) toilet rooms in medical care and long-term care facilities. Common-use unisex toilet rooms for exclusive patient use not located within patient bedrooms shall contain a lavatory and one water closet.

  11B-213.2.3 Unisex (Patient) bathing rooms in medical care and long-term care facilities. Common-use unisex bathing rooms for exclusive patient use not located within patient bedrooms shall contain one shower or one bathtub, one lavatory, and one water closet.

• CEBC § 2607.4 Medium relevance — show source text

  Exceptions:

  1. In structures provided with approved flame barriers extending 30 inches (760 mm) beyond the exterior wall in the plane of the floor, a vertical separation is not required at the floor except that provided by the vertical thickness of the flame barrier projection.
  2. Veneers of approved weather-resistant light-transmitting plastics used as exterior siding in buildings of Type V construction in compliance with Section 1405.
  3. The area of light-transmitting plastic wall panels in exterior walls of greenhouses shall be exempt from the area limitations of Table 2607.4 but shall be limited as required for unprotected openings in accordance with Section 705.9.

  TABLE 2607.4—AREA LIMITATION AND SEPARATION REQUIREMENTS FOR LIGHT-TRANSMITTING PLASTIC WALL PANELSa	Col2	Col3	Col4	Col5	Col6
  FIRE SEPARATION DISTANCE (feet)	CLASS OF PLASTIC	MAXIMUM PERCENTAGE AREA OF EXTERIOR WALL IN PLASTIC WALL PANELS	MAXIMUM SINGLE AREA OF PLASTIC WALL PANELS (square feet)	MINIMUM SEPARATION OF PLASTIC WALL PANELS (feet)	MINIMUM SEPARATION OF PLASTIC WALL PANELS (feet)
  FIRE SEPARATION DISTANCE (feet)	CLASS OF PLASTIC	MAXIMUM PERCENTAGE AREA OF EXTERIOR WALL IN PLASTIC WALL PANELS	MAXIMUM SINGLE AREA OF PLASTIC WALL PANELS (square feet)	Vertical	Horizontal
  Less than 6	—	Not Permitted	Not Permitted	—	—
  6 or more but less than 11	CC1	10	50	8	4
  6 or more but less than 11	CC2	Not Permitted	Not Permitted	—	—
  11 or more but less than or equal to 30	CC1	25	90	6	4
  11 or more but less than or equal to 30	CC2	15	70	8	4
  Over 30	CC1	50	Not Limited	3b	0
  Over 30	CC2	50	100	6b	3
  For SI: 1 foot = 304.8 mm, 1 square foot = 0.0929 m2. a. For combinations of plastic glazing and plastic wall panel areas permitted, see Section 2607.6. b. For reductions in vertical separation allowed, see Section 2607.4.	For SI: 1 foot = 304.8 mm, 1 square foot = 0.0929 m2. a. For combinations of plastic glazing and plastic wall panel areas permitted, see Section 2607.6. b.

• CBC § 301 Medium relevance — show source text

  This code provides three main options for a designer in dealing with alterations of existing buildings. These are laid out in Section 301 of this code:

  Option 1: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Prescriptive Compliance Method given in Chapter 5. It should be noted that this method originates from the former Chapter 34 of the IBC (2012 and earlier editions).

  Option 2: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Work Area Compliance Method given in Chapters 6 through 12.

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  Option 3: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Performance Compliance Method given in Chapter 13. It should be noted that this option was also provided in the former Chapter 34 of the IBC (2012 and earlier editions).

  Under limited circumstances, a building alteration can be made to comply with the laws under which the building was originally built, as long as the accessibility requirements are met, there has been no substantial structural damage and there will be limited structural alteration. Flood hazard provisions also must still be addressed where there is a substantial improvement.

  Note that all repairs must comply with Chapter 4 and all relocated buildings are addressed by Chapter 14.

  ARRANGEMENT AND FORMAT OF THE 2025 CEBC

  The format of the CEBC allows each chapter to be devoted to a particular subject. The following table shows how the CEBC is divided. The subsequent table shows CEBC requirements that are correlated with other California Codes. The chapter synopses detail the scope and intent of the provisions of the CEBC.

  CHAPTER TOPICS	Col2
  CHAPTER	SUBJECTS
  1, 2	Administrative Requirements and Definitions
  3	Provisions for all Compliance Methods
  4	Repairs
  5	Prescriptive Compliance Method for Existing Buildings
  6–11	Work Area Compliance Method for Existing Buildings
  13	Performance Compliance Method for Existing Buildings
  14	Relocated Buildings
  15	Construction Safeguards
  16	Referenced Standards
  Appendix A	Guidelines for Seismic Retrofit of Existing Buildings
  Appendix B	Supplementary Accessibility Requirements for Existing Buildings
  Appendix C	Guidelines for Wind Retrofit of Existing Buildings
  Appendix D	Board of Appeals
  Appendix E	Temporary Emergency Uses
  Resource A	Guidelines on Fire Ratings of Archaic Materials and Assemblies

  CALIFORNIA BUILDING CODE CORRELATED TOPICS

  The CEBC requirements for construction safeguards are directly correlated to the requirements of the CBC. The following table shows chapters of the CBC that are correlated with the CEBC:

  CEBC/CBC CORRELATED TOPICS	Col2	Col3
  CEBC CHAPTER/SECTION	CBC CHAPTER/SECTION	SUBJECT
  Chapter 15	Chapter 33	Construction safeguards

  Chapter 1 Scope and Administration.

  Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.

  Chapter 2 Definitions.

• CBC § 301 Medium relevance — show source text

  The IEBC is a model code in the International Code family of codes intended to provide requirements for repair and alternative approaches for alterations, changes of occupancy and additions to existing buildings. A large number of existing buildings and structures do not comply with the current building code requirements for new construction. Although many of these buildings are potentially salvageable, rehabilitation is often cost-prohibitive because compliance with all the requirements for new construction could require extensive changes that go well beyond the value of the building or the original scope of the alteration. At the same time, it is necessary to regulate construction in existing buildings that undergo additions, alterations, extensive repairs or change of occupancy. Such activity represents an opportunity to ensure that new construction complies with the current building codes and that existing conditions are maintained, at a minimum, to their current level of compliance or are improved as required to meet basic safety levels. To accomplish this objective, and to make the alteration process easier, this code allows for options for controlled departure from full compliance with the International Codes dealing with new construction, while maintaining basic levels for fire safety, structural and life safety features of the rehabilitated building.

  This code provides three main options for a designer in dealing with alterations of existing buildings. These are laid out in Section 301 of this code:

  Option 1: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Prescriptive Compliance Method given in Chapter 5. It should be noted that this method originates from the former Chapter 34 of the IBC (2012 and earlier editions).

  Option 2: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Work Area Compliance Method given in Chapters 6 through 12.

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  Option 3: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Performance Compliance Method given in Chapter 13. It should be noted that this option was also provided in the former Chapter 34 of the IBC (2012 and earlier editions).

  Under limited circumstances, a building alteration can be made to comply with the laws under which the building was originally built, as long as the accessibility requirements are met, there has been no substantial structural damage and there will be limited structural alteration. Flood hazard provisions also must still be addressed where there is a substantial improvement.

  Note that all repairs must comply with Chapter 4 and all relocated buildings are addressed by Chapter 14.

  ARRANGEMENT AND FORMAT OF THE 2025 CEBC

  The format of the CEBC allows each chapter to be devoted to a particular subject. The following table shows how the CEBC is divided. The subsequent table shows CEBC requirements that are correlated with other California Codes. The chapter synopses detail the scope and intent of the provisions of the CEBC.

• CEBC § 601.1.1 Medium relevance — show source text

  1|||X|||||||||||||||||||||| |601.1.1|||X|||||||||||||||||||||| |607.1|||X||||||||||||||||||||||

  The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

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  6-2 2025 CALIFORNIA EXISTING BUILDING CODE

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  6 CLASSIFICATION OF WORK

  User notes:

  About this chapter: Chapter 6 provides an overview of the Work Area Method available as an option for rehabilitation of a building. The chapter defines the different classifications of alterations and provides general requirements for alterations, change of occupancy, additions and historic buildings. Detailed requirements for all of these are given in Chapters 7 through 11.

  SECTION 601—GENERAL

  601.1 Scope. The provisions of this chapter shall be used in conjunction with Chapters 7 through 11 and shall apply to the alteration, addition and change of occupancy of existing structures, as referenced in Section 301.3.2. The work performed on an existing building shall be classified in accordance with this chapter. Historic buildings and structures shall comply with Part 8, Title 24, C.C.R.

  Exceptions: 1. [SFM] Use of Chapters 6-11 is not permitted in H, I and L, R-2.1, R-3.1 occupancies and high-rise buildings. 2. [BSC] Use of Chapters 6-11 is not permitted in occupancies, buildings and applications regulated by Building Standards Commission and listed in Section 1.2.

  601.1.1 Compliance with other alternatives. Alterations, additions and changes of occupancy to existing structures shall comply with the provisions of Chapters 7 through 11 or with one of the alternatives provided in Section 301.3.

  601.2 Work area. The work area, as defined in Chapter 2, shall be identified on the construction documents.

  SECTION 602—ALTERATION—LEVEL 1

  602.1 Scope. Level 1 alterations include the removal and replacement or the covering of existing materials, elements, equipment or fixtures using new materials, elements, equipment or fixtures that serve the same purpose.

  602.2 Application. Level 1 alterations shall comply with the provisions of Chapter 7.

  SECTION 603—ALTERATION—LEVEL 2

  603.1 Scope. Level 2 alterations include the addition or elimination of any door or window, the reconfiguration or extension of any system, or the installation of any additional equipment, and shall apply where the work area is equal to or less than 50 percent of the building area.

  Exception: The movement or addition of nonfixed and movable fixtures, cases, racks, counters and partitions not over 5 feet 9 inches (1753 mm) in height shall not be considered a Level 2 alteration.

  603.2 Application. Level 2 alterations shall comply with the provisions of Chapter 7 for Level 1 alterations as well as the provisions of Chapter 8.

  SECTION 604—ALTERATION—LEVEL 3

• CEBC § 0.5 Medium relevance — show source text

  The deflection criterion for interior partitions is based on the horizontal load
  defined in Section 1607_A_.16.
  c. See Section 2403 for glass supports.
  d. The deflection limit for the_D_ + (L or_Lr_) load combination only applies to the deflection due to the creep component of long-term dead load deflection plus the short-term live load
  deflection. For lumber, structural glued laminated timber, prefabricated wood I-joists and structural composite lumber members that are dry at time of installation and used under
  dry conditions in accordance with the ANSI/AWC NDS, the creep component of the long-term deflection shall be permitted to be estimated as the immediate dead load deflection
  resulting from 0.5_D_. For lumber and glued laminated timber members installed or used at all other moisture conditions or cross laminated timber and wood structural panels that
  are dry at time of installation and used under dry conditions in accordance with the ANSI/AWC NDS, the creep component of the long-term deflection is permitted to be estimated
  as the immediate dead load deflection resulting from_D_. The value of 0.5_D_ shall not be used in combination with ANSI/AWC NDS provisions for long-term loading.
  e. The preceding deflections do not ensure against ponding. Roofs that do not have sufficient slope or camber to ensure adequate drainage shall be investigated for ponding.
  See Chapter 8 of ASCE 7.
  f. The wind load shall be permitted to be taken as 0.42 times the “component and cladding” loads or directly calculated using the 10-year mean return interval basic wind
  speed,V, for the purpose of determining deflection limits in Table 1604_A_.3. Where framing members support glass, the deflection limit therein shall not exceed that specified
  in Section 1604_A_.3.7
  g. For steel structural members, the deflection due to creep component of long-term dead load shall be permitted to be taken as zero.
  h. For aluminum structural members or aluminum panels used in skylights and sloped glazing framing, roofs or walls of sunroom additions or patio covers not supporting edge
  of glass or aluminum sandwich panels, the total load deflection shall not exceed_l_/60. For continuous aluminum structural members supporting edge of glass, the total load
  deflection shall not exceed_l_/175 for each glass lite or_l_/60 for the entire length of the member, whichever is more stringent. For aluminum sandwich panels used in roofs or
  walls of sunroom additions or patio covers, the total load deflection shall not exceed_l_/120.
  i._ l_ = Length of the member between supports. For cantilever members,l shall be taken as twice the length of the cantilever.
  j. The snow load shall be permitted to be taken as 0.7 times the design snow load determined in accordance with Section 1608_A_.1 for the purpose of determining deflection
  limits in Table 1604_A_.3.|For SI: 1 foot = 304.8 mm.
  a. For structural roofing and siding made of formed metal sheets, the total load deflection shall not exceed_l_/60. For secondary roof structural members supporting formed
  metal roofing, the live load deflection shall not exceed_l_/150. For secondary wall members supporting formed metal siding, the design wind load deflection shall not exceed
  l/90. For roofs, this exception only applies when the metal sheets have no roof covering.
  b. Flexible, folding and portable partitions are not governed by the provisions of this section.

• CEBC § 170.2 Medium relevance — show source text

  The rated energy capacity shall be not less than the Minimum Rated Useable Energy Capacity determined by Equation 170.2-E, or by Equation 170.2-F if SARA was used to determine the PV capacity in Section 170.2-D, and the rated power capacity shall be not less than the Minimum Power Capacity determined by Equation 170.2-G. In mixed occupancy buildings, the total battery system capacity for the building shall be determined by applying the Minimum Rated Usable Energy Capacity to each of the listed building types and summing the capacities determined for each.

  EQUATION 170.2-E—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY kWh batt = k((CFA × B)/(1000 × C [0.5] ))

  — EQUATION 170.2-F BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY, SARA-ADJUSTED kWh batt = k((CFA × B)/(1000 × C [0.5] )) × (kWP Vdc,SARA /kWP Vdc )

  268 2025 CALIFORNIA ENERGY CODE

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  MULTIFAMILY BUILDINGS—PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES

  where:

  kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.

  kW PVdc = Minimum Rated PV System Capacity in kW from Equation 170.2D. kW PVdc, SARA = Minimum Rated PV System Capacity in kW from the SARA calculation. CFA = Conditioned floor area that is subject to the PV system requirements of Section 170.2(g) in square feet.

  B = BESS Capacity Factor in Wh/square foot as specified in Table 170.2-V for the building type.

  C = Rated single charge-discharge cycle AC to AC (round-trip) efficiency of the BESS.

  EQUATION 170.2-G—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED POWER CAPACITY

  kW batt = kW batt /4

  where:

  kW batt = Minimum Rated Power Capacity of the BESS in kW dc .

  kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.

  Exception 1 to Section 170.2(h): No BESS is required if the installed PV system capacity is less than 15 percent of the capacity determined by Equation 170.2-D.

  Exception 2 to Section 170.2(h): No BESS is required in buildings with BESS requirements with less than 10 kWh minimum rated usable energy capacity.

  |TABLE 170.

• CEBC § 903.3.1.1 Medium relevance — show source text

  Exceptions:

  1. Where interior exit stairways or ramps are interconnected by a 1-hour fire-resistance-rated corridor conforming to the requirements of Section 1020, the required exit separation shall be measured along the shortest direct line of travel within the corridor.

  2. Where a building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2, the separation distance shall be not less than one-third of the length of the maximum overall diagonal dimension of the area served.

  1007.1.1.1 Measurement point. The separation distance required in Section 1007.1.1 shall be measured in accordance with the following:

  1. The separation distance to exit or exit access doorways shall be measured to any point along the width of the doorway.
  2. The separation distance to exit access stairways shall be measured to the closest riser.
  3. The separation distance to exit access ramps shall be measured to the start of the ramp run.

  1007.1.2 Three or more exits or exit access doorways. Where access to three or more exits is required, not less than two exit or exit access doorways shall be arranged in accordance with the provisions of Section 1007.1.1. Additional required exit or exit access doorways shall be arranged a reasonable distance apart so that if one becomes blocked, the others will be available.

  1007.1.3 Remoteness of exit access stairways or ramps. Where two exit access stairways or ramps provide the required means of egress to exits at another story, the required separation distance shall be maintained for all portions of such exit access stair ways or ramps.

  1007.1.3.1 Three or more exit access stairways or ramps. Where more than two exit access stairways or ramps provide the required means of egress, not less than two shall be arranged in accordance with Section 1007.1.3.

  SECTION 1008 —MEANS OF EGRESS ILLUMINATION

  1008.1 Means of egress illumination. Illumination shall be provided in the means of egress in accordance with Section 1008.2. In the event of power supply failure, means of egress illumination shall comply with Section 1008.2.4.

  1008.2 Illumination required. The means of egress serving a room or space shall be illuminated at all times that the room or space is occupied.

  Exceptions:

  1. Occupancies in Group U.
  2. Self-service storage units 400 square feet (37.2 m [2] ) or less in area and accessed directly from the exterior of the building.
  3. Aisle accessways in Group A.
  4. Dwelling units and sleeping units in Groups R-1, R-2 and R-3.
  5. Sleeping units of Group I, R-2.1 and R-4 occupancies.

  1008.2.1 Illumination level under normal power. The means of egress illumination level shall be not less than 1 footcandle (11 lux) at the walking surface. Along exit access stairways, exit stairways and at their required landings, the illumination level shall not be less than 10 footcandles (108 lux) at the walking surface when the stairway is in use.

• CEBC § 601.1.1 Medium relevance — show source text

  601.1.1 Compliance with other alternatives. Alterations, additions and changes of occupancy to existing structures shall comply with the provisions of Chapters 7 through 11 or with one of the alternatives provided in Section 301.3.

  601.2 Work area. The work area, as defined in Chapter 2, shall be identified on the construction documents.

  SECTION 602—ALTERATION—LEVEL 1

  602.1 Scope. Level 1 alterations include the removal and replacement or the covering of existing materials, elements, equipment or fixtures using new materials, elements, equipment or fixtures that serve the same purpose.

  602.2 Application. Level 1 alterations shall comply with the provisions of Chapter 7.

  SECTION 603—ALTERATION—LEVEL 2

  603.1 Scope. Level 2 alterations include the addition or elimination of any door or window, the reconfiguration or extension of any system, or the installation of any additional equipment, and shall apply where the work area is equal to or less than 50 percent of the building area.

  Exception: The movement or addition of nonfixed and movable fixtures, cases, racks, counters and partitions not over 5 feet 9 inches (1753 mm) in height shall not be considered a Level 2 alteration.

  603.2 Application. Level 2 alterations shall comply with the provisions of Chapter 7 for Level 1 alterations as well as the provisions of Chapter 8.

  SECTION 604—ALTERATION—LEVEL 3

  604.1 Scope. Level 3 alterations apply where the work area exceeds 50 percent of the building area.

  604.2 Application. Level 3 alterations shall comply with the provisions of Chapters 7 and 8 for Level 1 and 2 alterations, respectively, as well as the provisions of Chapter 9.

  SECTION 605—CHANGE OF OCCUPANCY

  605.1 Scope. Change of occupancy provisions apply where the activity is classified as a change of occupancy as defined in Chapter 2.

  605.2 Application. Changes of occupancy shall comply with the provisions of Chapter 10.

  SECTION 606—ADDITIONS

  606.1 Scope. Provisions for additions shall apply where work is classified as an addition as defined in Chapter 2.

  606.2 Application. Additions to existing buildings shall comply with the provisions of Chapter 11.

  SECTION 607—HISTORIC BUILDINGS

  607.1 Scope. The provisions of the California Historical Building Code (Part 8, Title 24, C.C.R) shall apply to qualified historical buildings or properties.

  2025 CALIFORNIA EXISTING BUILDING CODE 6-3

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  6-4 2025 CALIFORNIA EXISTING BUILDING CODE

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  CALIFORNIA EXISTING BUILDING CODE – MATRIX ADOPTION TABLE

  CHAPTER 7 – ALTERATIONS—LEVEL 1

  (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)