CEBC · California Existing Building Code
What accessibility upgrades are required for alterations to existing buildings?
If you alter a building element or space, make that element/space accessible and provide an accessible path of travel (entrance → toilets → drinking fountains → signs), unless the enforcing agency documents technical infeasibility; these rules come from CEBC **§ 306** and the CBC Chapter 11B scoping and path-of-travel requirements (see **§ 11B-202.3** and **§ 11B-202.4**).
Last reviewed: July 6, 2026
What the code requires — 2-4 sentences
When an existing public building, public accommodation, commercial facility or public housing is altered, the work must meet the accessibility rules in the California Building Code, Chapter 11B. In plain English: make each altered element or space accessible and provide an accessible path of travel from the building entrance to the altered area (or the maximum extent feasible where full compliance is technically infeasible). See § 306 of the CEBC and § 11B-202.3 / § 11B-202.4 of the CBC for the controlling direction.
The single most important rule: when you alter an element or space, that element/space must comply with Chapter 11B and an accessible path of travel to it must be provided unless the enforcing authority documents that full compliance is technically infeasible.
Requirements in detail
Basic rule
Altered element or space: “Where existing elements or spaces are altered, each altered element or space shall comply with the applicable requirements of Division 2” (CBC). In other words, the portion you alter must meet the Chapter 11B technical requirements (fixtures, clearances, controls, signage, etc.). § 11B-202.3.
Path of travel: When you alter or add to a building you must provide an accessible path of travel to the altered area. The primary accessible path of travel includes at minimum the primary entrance, toilet and bathing facilities serving the area, drinking fountains, public telephones and signs—unless an exception applies. § 11B-202.4.
Extent rule (single elements vs. whole rooms): If separate single-element alterations, considered together, equal an alteration of a room or space, then the entire room/space must be made accessible. § 11B-202.3.3.
No net loss: An alteration that would decrease the accessibility of a building below the level required for new construction is prohibited. § 11B-202.3.1.
Exceptions & limits (when upgrades are limited)
Technically infeasible: If the enforcing authority documents that full compliance is technically infeasible, provide equivalent facilitation or comply to the maximum extent feasible and record the finding in the agency file. § 11B-202.3 (Exception 2).
Limited-scope items: Some small alterations are limited to the actual scope of work and need not trigger full path-of-travel upgrades (examples include: altering one building entrance, one existing toilet facility, existing elevators, steps, handrails, installing ramps, repositioning equipment/furniture, making a curb cut, etc.). See the short list of items in the exceptions to § 11B-202.4.
Residential dwelling units: Dwelling units that are not required to be accessible under the code are not subject to § 11B-202.3; special CBC provisions apply to multifamily residential alterations (see the residential alteration sections). § 11B-202.3 (Exception 3).
Table — Decision-relevant triggers and what to provide
| Decision trigger | Required upgrade | Key threshold / limit | Code Reference |
|---|---|---|---|
| You alter a single element (e.g., replace lavatory) | That altered element must comply with Chapter 11B technical specs | If multiple single-element changes together equal a room alteration, the whole room must be accessible | § 11B-202.3, § 11B-202.3.3 |
| You alter a room or area (tenant improvement, reconfigure space) | Accessible path of travel to the altered area (entrance, toilets, drinking fountain, telephones, signs) | Path-of-travel upgrades limited to the project scope unless otherwise required; exceptions exist for small-scope work | § 11B-202.4 |
| Alteration would make building less accessible | Prohibited — cannot reduce accessibility below new-construction requirements | N/A | § 11B-202.3.1 |
| Alteration that is structurally or physically impossible | Provide equivalent facilitation; document technically infeasible finding | Finding must be recorded in enforcing agency files | § 11B-202.3 (Exception for technically infeasible) |
| Altering residential building (vacated building >15 units) | A percentage of units must meet accessible features when building is vacated and remodeled (residential-specific rules) | Example: where vacated >15 units, at least 5% of units must comply with certain accessibility features | § 11B-233.3.4.1 |
How CEBC ties to CBC Chapter 11B
- The CEBC directs that public buildings subject to Division of the State Architect/other authorities must comply with CBC Chapter 11B for accessibility—so the CEBC “boots in” the CBC accessibility rules for existing-building alterations. § 306 (CEBC) references CBC Chapter 11B.
Exceptions & special cases
Technically infeasible — partial compliance allowed: The enforcing agency can permit deviations where full compliance would be technically infeasible, but the agency must document the finding and provide equivalent facilitation to the maximum extent feasible. § 11B-202.3 (Exception 2).
Limited-scope alteration exceptions — small fixes or isolated barrier removal actions (listed in the exceptions to § 11B-202.4) are limited to the actual scope of work and typically do not trigger full path-of-travel upgrades (for example: altering one toilet facility or one entrance). § 11B-202.4 (Exceptions).
Qualified historic buildings — Appendix B procedures may allow alternate solutions where standard accessibility upgrades would threaten historic significance; the CEBC Appendix B and related CBC provisions set out the consultation/alternate requirements. See Appendix B procedures for historic buildings and reference to alternate provisions (e.g., Sections 306.7.16 / 306.7.18 alternatives in the CEBC).
Residential specifics — the CBC contains separate scoping rules for residential alterations (percent-of-units rules, relocation of accessible units when infeasible, vacated-building rules). See CBC residential alteration sections (e.g., § 11B-233.3.4).
Note: I was able to retrieve and ground the CEBC direction for accessibility in § 306 and the CBC Chapter 11B scoping rules (e.g., § 11B-202.3 / § 11B-202.4). The specific CEBC text for § 306A.1 was not present in the retrieved files, so I cannot quote or summarize § 306A.1 from the CEBC here. If you need § 306A.1 text, I can search again if you upload that file or allow a broader search.
Common mistakes
- Assuming only the altered fixture must be fixed: if separate single-element changes together equal a room alteration, the whole room must be made accessible (missed § 11B-202.3.3).
- Forgetting path-of-travel: designers sometimes alter tenant space but fail to provide an accessible route to the new area (entrance → toilets → signs), contrary to § 11B-202.4.
- Failing to document technical infeasibility: if full compliance truly can’t be met, the enforcing agency’s written finding is required. Don’t rely on verbal agreement. § 11B-202.3.
- Applying residential exemptions too broadly: some residential alterations have special rules; always check the residential scoping sections (e.g., § 11B-233.3.4).
- Treating historic buildings without consultation: do not assume historic status automatically exempts work — use Appendix B consultation procedures where applicable.
Worked example — tenant improvement in a retail suite
Scenario: You are renovating a 1,200 ft² retail tenant space inside a shopping center. Work includes reconfiguring the sales floor, replacing display counters, and altering the toilet that serves the tenant.
Steps and application:
- The CEBC directs that public buildings comply with CBC Chapter 11B — so apply § 11B-202.3 and § 11B-202.4 to this alteration.
- Because you are altering the toilet, that altered element (the toilet room and its fixtures) must meet the applicable Chapter 11B technical requirements (clearances, grab bars, door maneuvering). § 11B-202.3.
- You must provide an accessible path of travel from the shopping center’s primary entrance to the altered suite and to the toilet serving the suite. That path includes the primary entrance, the toilet facility serving the area and signs. § 11B-202.4.
- If the only scope of work had been “altering one existing toilet facility” and the enforcing agency determines the path-of-travel upgrades beyond the toilet are disproportionate, one of the exceptions in § 11B-202.4 may apply — but you must confirm and document that exception. § 11B-202.4 (Exceptions).
- If structural, site, or space constraints make certain path-of-travel upgrades impossible, obtain a technically infeasible determination and provide equivalent facilitation to the maximum extent feasible. § 11B-202.3 (Exception 2).
Practical takeaway: plan for both the element upgrade (toilet) and the connection (accessible route) during design; don’t wait to discover access barriers at permitting.
Related provisions — quick list
- § 306 (CEBC) — accessibility for existing buildings; ties CEBC to CBC Chapter 11B.
- § 306A.1 (CEBC) — requested as a controlling section by the user; text was not present in the retrieved files (not available in current search results).
- § 11B-202.3 (CBC) — Alterations: altered elements/spaces must comply; technical infeasible language.
- § 11B-202.3.1 (CBC) — Prohibited reduction in access.
- § 11B-202.3.3 (CBC) — Alteration of single elements that together equal room/space.
- § 11B-202.4 (CBC) — Path of travel requirements and listed exceptions.
- § 11B-233.3.4.1 (CBC) — Residential vacated-building percentages and requirements for dwelling units.
- CEBC Appendix B (Supplementary Accessibility Requirements) — historic-building alternatives and consultation procedures.
Code references
Grounded in the retrieved California Existing Building Code — click a citation to read the verbatim passage:
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.
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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:
- Mechanical systems, electrical systems, fire protection systems and abatement of hazardous materials.
- Windows, hardware, operating controls, electrical outlets and signs.
- 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:
Where windows are added they are not required to comply with the light and ventilation requirements of the California Building Code .
Newly installed electrical equipment shall comply with the requirements of Section 806.
The length of dead-end corridors in newly constructed spaces shall only be required to comply with the provisions of Section 804.8.
The minimum ceiling height of the newly created habitable and occupiable spaces and corridors shall be 7 feet (2134 mm).
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).
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 § 5-6 High relevance — show source text
For office and retail buildings the maximum allowed kVA to be utilized for EV capable spaces is 25 percent.|
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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:
- For 20-ampere receptacles, NEMA 6-20R.
- For 30-ampere receptacles, NEMA 14-30R.
- 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.
- 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.
- When a new photovoltaic system is installed covering existing parking spaces.
- 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:
- 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.
- Remote parking facilities that do not have access to the building service panel.
- Parking area lighting upgrades where no trenching is part of the scope of work.
- Emergency repairs, including but not limited to water line break in parking facilities, natural disaster repairs, etc.
CEBC § 901.1 High relevance — show source text
In contrast, Level 1 alterations do not involve space reconfiguration, and Level 2 alterations involve extensive space reconfiguration that does not exceed 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. At times and under certain situations, this chapter also is intended to improve the safety of certain building features beyond the work area and in other parts of the building where no alteration work might be taking place.
SECTION 901—GENERAL
901.1 Scope. Level 3 alterations as described in Section 604 shall comply with the requirements of this chapter.
901.2 Compliance. In addition to the provisions of this chapter, work shall comply with all of the requirements of Chapters 7 and 8. The requirements of Sections 802, 803, 804 and 805 shall apply within all work areas whether or not they include exits and corridors shared by more than one tenant and regardless of the occupant load.
Exception: Buildings in which the reconfiguration of space affecting exits or shared egress access is exclusively the result of compliance with the accessibility requirements of Section 306.7.1 shall not be required to comply with this chapter.
SECTION 902—SPECIAL USE AND OCCUPANCY
902.1 Reserved.
902.2 Group R-2.1 occupancies. Group R-2.1 occupancies shall be classified in accordance with Section 308.2 of the California Build- ing Code .
902.2.1 Smoke barriers in Group R-2.1 . In Group R-2.1 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 fewer than two compartments by smoke barrier walls in accordance with Section 420.6 of the California Building Code .
902.3 Ambulatory care facilities. Where a Level 3 work area includes an existing ambulatory care facility, the following shall be provided:
- A smoke compartment in accordance with Section 422.3 of the California Building Code, where the alteration results in an ambulatory care facility greater than 10,000 square feet on one story.
- Separation from adjacent spaces in accordance with Section 422.2 of the California Building Code, where any such facility has the potential for four or more care recipients incapable of self-preservation at any time.
SECTION 903—BUILDING ELEMENTS AND MATERIALS
903.1 Existing shafts and vertical openings. Existing stairways that are part of the means of egress shall be enclosed in accordance with Section 802.2.1 from the highest work area floor to, and including, the level of exit discharge and all floors below.
903.2 Fire partitions in Group R-3. Fire separation in Group R-3 occupancies shall be in accordance with Section 903.2.1.
CEBC § 1.10.1 High relevance — show source text
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Chapter 3 Provisions for All Compliance Methods.
Chapter 3 guides the use of the three compliance methods of the CEBC and provides requirements that apply globally. The globally applicable requirement include general requirements related to buildings materials and other applicable codes, storm shelters, structural loads, in-situ load tests, accessibility, smoke alarms, carbon monoxide detection and exterior wall coverings.
Chapter 3A Provisions for All Compliance Methods.
Chapter 3A controls the compliance options for alteration, repair, addition, evaluation and change of occupancy of existing structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
Chapter 4 Repairs.
Chapter 4, a chapter independent of the three compliance methods, governs the repair of existing buildings. The provisions define conditions under which repairs may be made using materials and methods like those of the original construction or the extent to which repairs must comply with requirements for new buildings.
Chapter 4A Repairs.
Chapter 4A governs the repair of existing buildings regulated by the Department of Health Care Access and Information/Office of State- wide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
Chapter 5 Prescriptive Compliance Method.
Chapter 5 provides one of the three main options of compliance available in the CEBC for buildings and structures undergoing alteration, addition or change of occupancy. The base requirements are more administrative in nature. The structural triggers for upgrades are consistent with the Work Area Method.
Chapter 5A Prescriptive Compliance Method.
Chapter 5A provides details for the prescriptive compliance method for alteration, addition and change of occupancy of existing build- ings and structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
Chapter 6 Classification of Work.
Chapter 6 provides an overview of the Work Area Method and defines the different classifications of work including alterations, change of occupancy, additions and historic buildings. Detailed requirements for all of these are given in subsequent Chapters 7 through 11.
Chapter 7 Alterations—Level 1.
Chapter 7 provides the technical requirements for those existing buildings that undergo Level 1 alterations as described in Section 602, which includes replacement or covering of existing materials, elements, equipment or fixtures using new materials for the same purpose. This chapter is distinguished from Chapters 8 and 9 by only involving replacement of building components with new components with no reconfiguration of space.
Chapter 8 Alterations—Level 2.
A Level 2 alteration is an alteration involving space reconfiguration that could be up to and including 50 percent of the area of the building or addition of a new building system. Level 2 alterations also include the extension or addition of any system or equipment. The purpose of Chapter 8 is to provide detailed requirements and provisions to identify the required improvements in the existing building elements, means of egress, fire protection, structural systems, energy efficiency, and other building systems include electrical, mechanical and plumbing when a building is being altered.
Chapter 9 Alterations—Level 3.
CBC § 301 High 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 § 902.1 High relevance — show source text
2 Exception||||†|†|||||||||||||||||||| |902.1_Reserved_|||X|||||||||||||||||||||| |902.2 – 902.2.1|||X|||||||||||||||||||||| |902.2 – 902.3||||†|†|||||||||||||||||||| |903.4||||†|†|||||||||||||||||||| |904.1|||X|||||||||||||||||||||| |904.2|||X|||||||||||||||||||||| |904.2.1|||X|||||||||||||||||||||| |908||||†|†||||||||||||||||||||
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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9 ALTERATIONS—LEVEL 3
User notes:
About this chapter : Chapter 9 provides the technical requirements for those existing buildings that undergo Level 3 alterations. 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. This chapter is distinguished from Chapters 7 and 8 by involving alterations that cover 50 percent or more of the aggregate area of the building. In contrast, Level 1 alterations do not involve space reconfiguration, and Level 2 alterations involve extensive space reconfiguration that does not exceed 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. At times and under certain situations, this chapter also is intended to improve the safety of certain building features beyond the work area and in other parts of the building where no alteration work might be taking place.
SECTION 901—GENERAL
901.1 Scope. Level 3 alterations as described in Section 604 shall comply with the requirements of this chapter.
901.2 Compliance. In addition to the provisions of this chapter, work shall comply with all of the requirements of Chapters 7 and 8. The requirements of Sections 802, 803, 804 and 805 shall apply within all work areas whether or not they include exits and corridors shared by more than one tenant and regardless of the occupant load.
Exception: Buildings in which the reconfiguration of space affecting exits or shared egress access is exclusively the result of compliance with the accessibility requirements of Section 306.7.1 shall not be required to comply with this chapter.
SECTION 902—SPECIAL USE AND OCCUPANCY
902.1 Reserved.
902.2 Group R-2.1 occupancies. Group R-2.1 occupancies shall be classified in accordance with Section 308.2 of the California Build- ing Code .
CEBC § 102.4 High relevance — show source text
Chapter 14 is applicable to any building that is moved or relocated. This chapter is independent of any of the three compliance methods and focuses on the structural loads where the building is being relocated.
Chapter 15 Construction Safeguards.
Chapter 15 establishes specific regulations in order to minimize the risk to the public and adjacent property during construction. Additionally, this chapter addresses fire and life safety and means of egress during the construction process. This includes requirements for a site safety plan. This chapter is also consistent with Chapter 33 of the CBC and Chapter 33 of the California Fire Code (CFC).
Chapter 16 Referenced Standards.
Chapter 16 lists all of the product and installation standards and codes that are referenced throughout Chapters 1 through 15 and includes identification of the promulgators and the section numbers in which the standards and codes are referenced. As stated in Section 102.4, these standards and codes become an enforceable part of the code (to the prescribed extent of the reference) as if printed in the body of the code.
Appendix A Guidelines for the Seismic Retrofit of Existing Buildings.
Appendix A provides guidelines for upgrading the seismic resistance capacity of different types of existing buildings. It is organized into separate chapters which deal with buildings of different types, including unreinforced masonry buildings, reinforced concrete and reinforced masonry wall buildings, and lightframe wood buildings. This appendix includes its own referenced standards.
Appendix B Supplementary Accessibility Requirements for Existing Buildings and Facilities.
Chapters 11A and 11B of the CBC contain provisions that set forth requirements for accessibility to buildings and their associated sites and facilities for people with physical disabilities. Appendix B was added to address accessibility in construction for items that are not typically enforceable through the traditional building code enforcement process.
Appendix C Guidelines for the Wind Retrofit of Existing Buildings.
The purpose of Appendix C is to provide voluntary prescriptive alternatives for addressing the retrofit of buildings in high-wind areas. Currently, there are two chapters which deal with the retrofit of gable ends and the fastening of roof decks, Appendix Chapters C1 and C2, respectively. This appendix includes its own referenced standards.
Appendix D Board of Appeals.
Appendix D contains the provisions for appeal and the establishment of a board of appeals. The provisions include the application for an appeal, the makeup of the board of appeals and the conduct of the appeal process.
Appendix E Temporary Emergency Uses.
Appendix E is intended to provide guidance for designers, engineers, architects and fire and building officials on allowing temporary emergency uses of existing buildings with respect to the minimum code requirements. This appendix is a template or checklist that references the relevant code requirement of concerns.
Resource A Guidelines on Fire Ratings of Archaic Materials and Assemblies.
In the process of repair and alteration of existing buildings, based on the nature and the extent of the work, the CEBC might require certain upgrades in the fire-resistance rating of building elements, at which time it becomes critical for the designers and the code
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officials to be able to determine the fire-resistance rating of the existing building elements as part of the overall evaluation for the assessment of the need for improvements. These guidelines are based upon the Guideline on Fire Ratings of Archaic Materials published by the National Institute of Building Sciences (NIBS).
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CEBC § 1.8.10 High relevance — show source text
Division 1, Chap-_ ter 3, Subchapter 1, commencing with Section 3000.
SECTION 1.8.10—OTHER BUILDING REGULATIONS
1.8.10.1 Existing structures. Notwithstanding other provisions of law, the replacement, retention and extension of original materials and the use of original methods of construction for any existing building or accessory structure, or portions thereof, shall be permitted in accordance with the provisions of this code and the California Existing Building Code, as adopted by the Department of Housing and Community Development. For additional information, see California Health and Safety Code, Sections 17912, 17920.3, 17922 and 17958.8.
1.8.10.2 Moved structures. Subject to the requirements of California Health and Safety Code Sections 17922, 17922.3 and 17958.9, local ordinances or regulations relating to a moved residential building or accessory structure thereto, shall permit the replacement, reten- tion and extension of original materials and the use of original methods of construction so long as the structure does not become or continue to be a substandard building.
SECTION 1.9—DIVISION OF THE STATE ARCHITECT
1.9.1 Division of the State Architect—Access Compliance.
General. The purpose of this code is to ensure that barrier-free design is incorporated in all buildings, facilities, site work and other improvements to which this code applies in compliance with state law to ensure that these improvements are accessible to and usable by persons with disabilities. Additions, alterations and structural repairs in all buildings and facilities shall comply with these provisions for new buildings, except as otherwise provided and specified herein.
The provisions of these regulations shall apply to any portable buildings leased or owned by a school district, and shall also apply to temporary and emergency buildings and facilities. Temporary buildings and facilities are not of permanent construction but are exten- sively used or are essential for public use for a period of time. Examples of temporary buildings or facilities covered include, but are not limited to: reviewing stands, temporary classrooms, bleacher areas, exhibit areas, temporary banking facilities, temporary health screening services or temporary safe pedestrian passageways around a construction site.
In addition, to incorporate standards at least as restrictive as those required by the federal government for barrier-free design under (1) Title III (Public Accommodations and Commercial Facilities), Subpart D (New Construction and Alteration) (see 28 C.F.R., Part 36), and (2) Title II (Public Entities), Section 35.151 (New Construction and Alterations) (see 28 C.F.R., Part 35) both from the Americans with Disabilities Act of 1990, 2004 Americans with Disabilities Act Accessibility Guidelines, as adopted by the U.S. Department of Justice (see 36 C.F.R. Part 1191, Appendices B and D), and (3) under the Fair Housing Amendments Act of 1988. Some of these regulations may be more stringent than state law in order to meet the federal requirement.
1.9.1.1 Application. See Government Code commencing with Section 4450.
Publicly funded buildings, structures, sidewalks, curbs and related facilities shall be accessible to and usable by persons with disabilities as follows:
CEBC § 201.3 High relevance — show source text
11B- 201.3 Temporary and permanent structures. These requirements shall apply to temporary and permanent buildings and facilities.
11B-201.4 Construction support facilities. These requirements shall apply to temporary or permanent construction support facilities for uses and activities not directly associated with the actual processes of construction, including but not limited to offices, meeting rooms, plan rooms, other administrative or support functions. When provided, toilet and bathing facilities serving construction support facilities shall comply with Section 11B-213. When toilet and bathing facilities serving construction support facilities are provided by portable units, at least one of each type shall be accessible and connected to the construction support facilities it serves by an accessible route.
Exception: During construction an accessible route shall not be required between site arrival points or the boundary of the area of construction and the entrance to the construction support facilities if the only means of access between them is a vehicular way not providing pedestrian access.
SECTION 11B- 202—EXISTING BUILDINGS AND FACILITIES
11B- 202.1 General. Additions and alterations to existing buildings or facilities shall comply with Section 11B- 202 .
11B- 202.2 Additions. Each addition to an existing building or facility shall comply with the requirements for new construction and shall comply with Section 11B-202.4.
11B- 202.3 Alterations. Where existing elements or spaces are altered, each altered element or space shall comply with the applicable requirements of Division 2, including Section 11B-202.4.
Exceptions:
1. Reserved.
2. Technically infeasible. In alterations, where the enforcing authority determines compliance with applicable requirements is technically infeasible, the alteration shall provide equivalent facilitation or comply with the requirements to the maximum extent feasible. The details of the finding that full compliance with the requirements is technically infeasible shall be recorded and entered into the files of the enforcing agency.
- Residential dwelling units not required to be accessible in compliance with this code shall not be required to comply with Section 11B- 202.3.
11B- 202.3.1 Prohibited reduction in access. An alteration that decreases or has the effect of decreasing the accessibility of a building or facility below the requirements for new construction at the time of the alteration is prohibited.
11B- 202.3.2 Extent of application. An alteration of an existing element, space or area of a building or facility shall not impose a requirement for accessibility greater than required for new construction.
11B-202.3.3 Alteration of single elements. If alterations of single elements, when considered together, amount to an alteration of a room or space in a building or facility, the entire room or space shall be made accessible.
11B- 202.4 Path of travel requirements in alterations, additions and structural repairs. When alterations or additions are made to existing buildings or facilities, an accessible path of travel to the specific area of alteration or addition shall be provided. The primary accessible path of travel shall include:
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
California Existing Building Code High relevance — show source text
3/8″
main reinforcement bars at 57/8″ pitch
with7/8″ concrete cover;3/8″ main rein-
forcement bars at 41/2″ pitch
perpendicular with1/2″ concrete cover;
13′1″ span restrained.|195 psf|4 hrs|||7|1, 7|4| |F/C-4-RC-7|4″|4″ (5025 psi) concrete deck;1/4″ reinforce-
ment bars at 71/2″ pitch with3/4″ cover;3/8″
main reinforcement bars at 33/4″ pitch
perpendicular with1/2″ cover; 13′1″ span
restrained.|140 psf|1 hr
16 min|||7|1, 2|11/4| |F/C-4-RC-8|4″|4″ thick (4905 psi) deck;1/4″ reinforce-
ment bars at 71/2″ pitch with7/8″ cover;3/8″
main reinforcement bars at 33/4″ pitch
perpendicular with1/2″ cover; 13′1″ span
restrained.|100 psf|1 hr
23 min|||7|1, 2|11/3| |F/C-4-RC-9|4″|4″ deep (4370 psi);1/4″ reinforcement bars
at 6″ pitch with3/4″ cover;1/4″ main rein-
forcement bars at 4″ pitch perpendicular
with1/2″ cover; 13′1″ span restrained.|150 psf|2 hrs|||7|1, 3|2| |F/C-4-RC-10|4″|4″ thick (5140 psi) deck;1/4″ reinforce-
ment bars at 71/2″ pitch with7/8″ cover;3/8″
main reinforcement bars at 33/4″ pitch
perpendicular with1/2″ cover; 13′1″ span
restrained.|140 psf|1 hr
16 min|||7|1, 5|11/4| |F/C-4-RC-11|4″|4″ thick (4000 psi) concrete deck;
3″ × 11/2″ × 4 lbs R.S.J.; 2′6″ C.R.S.; flush
with top surface; 4″ × 6″ x 13 SWG mesh
reinforcement 1″ from bottom of slab; 6′6″
span restrained.|150 psf|2 hrs|||7|1, 3|2| |F/C-4-RC-12|4″|4″ deep (2380 psi) concrete deck;
3″ × 11/2″ × 4 lbs R.S.J.; 2′6″ C.R.S.CEBC § 202.3. High relevance — show source text
- Residential dwelling units not required to be accessible in compliance with this code shall not be required to comply with Section 11B- 202.3.
11B- 202.3.1 Prohibited reduction in access. An alteration that decreases or has the effect of decreasing the accessibility of a building or facility below the requirements for new construction at the time of the alteration is prohibited.
11B- 202.3.2 Extent of application. An alteration of an existing element, space or area of a building or facility shall not impose a requirement for accessibility greater than required for new construction.
11B-202.3.3 Alteration of single elements. If alterations of single elements, when considered together, amount to an alteration of a room or space in a building or facility, the entire room or space shall be made accessible.
11B- 202.4 Path of travel requirements in alterations, additions and structural repairs. When alterations or additions are made to existing buildings or facilities, an accessible path of travel to the specific area of alteration or addition shall be provided. The primary accessible path of travel shall include:
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
5. Signs.
Exceptions:
1. Residential dwelling units shall comply with Section 11B-233.3.4.2. 2. If the following elements of a path of travel have been constructed or altered in compliance with the accessibility require- ments of the immediately preceding edition of the California Building Code, it shall not be required to retrofit such elements to reflect the incremental changes in this code solely because of an alteration to an area served by those elements of the path of travel:
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
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
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.
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
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
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,
California Existing Building Code High relevance — show source text
; 2′6″ C.R.S. with 1″ cover on
both top and bottom flanges; 12′ span
simply supported.|115 psf|29 min|||7|1, 5,
13|1/4| |F/C-6-RC-31|6″|6″ deep (3450 psi) concrete deck; 4″ ×
13/4″ × 5 lbs R.S.J.; 2′6″ C.R.S. with 1″ cover
on both top and bottom flanges; 12′ span
simply supported.|25 psf|3 hrs
35 min|||7|1, 2|31/2| |F/C-6-RC-32|6″|6″ deep (4460 psi) concrete deck; 4″ ×
13/4″ × 5 lbs R.S.J.; 2′ C.R.S. with 1″ cover
on both top and bottom flanges; 12′ span
simply supported.|60 psf|4 hrs
30 min|||7|1, 10|41/2| |F/C-6-RC-33|6″|6″ deep (4360 psi) concrete deck; 4″ × 13/4″
× 5 lbs R.S.J.; 2′ C.R.S. with 1″ cover on
both top and bottom flanges; 13′1″ span
restrained.|60 psf|2 hrs|||7|1, 3|2| |F/C-6-RC-34|61/4″|61/4″ thick; 43/4″ (5120 psi) concrete core;
1″ T&G board flooring;1/2″ plaster under-
coat; 4″ × 3″ × 10 lbs R.S.J.; 3′ C.R.S. flush
with top surface concrete; 12′ span simply
supported; 2″ × 1′3″ clinker concrete
insert.|100 psf|4 hrs|||7|1, 7|4| |F/C-6-RC-35|61/4″|43/4″ (3600 psi) concrete core; 1″ T&G
board flooring;1/2″ plaster undercoat; 4″ ×
3″ × 10 lbs R.S.J.; 3′ C.R.S. flush with top
surface concrete; 12′ span simply
supported; 2″ × 1′3″ clinker concrete
insert.|100 psf|2 hrs
30 min|||7|1, 5|21/2| |F/C-6-RC-36|61/4″|43/4″ (2800 psi) concrete core; 1″ T&G
board flooring;1/2″ plaster undercoat; 4″ ×
3″ × 10 lbs R.S.J.; 3′ C.R.S.CEBC § 18934.7. Medium relevance — show source text
ADMINISTRATION
2. University of California, California State Universities and California Community Colleges.
Application— Standards for lighting for parking lots and primary campus walkways at the University of California, California State Universities and California Community Colleges.
Enforcing agency— State or local agency specified by the applicable provisions of law.
Authority cited— Government Code Section 14617.
Reference— Government Code Section 14617.
3. Existing state-owned buildings, including those owned by the University of California and by the California State University.
Application— Building seismic retrofit standards including abating falling hazards of structural and nonstructural components and strengthening of building structures. See also Division of the State Architect.
Enforcing agency— State or local agency specified by the applicable provisions of law.
Authority cited— Health and Safety Code Section 16600.
Reference— Health and Safety Code Sections 16600 through 16604. 4. Unreinforced masonry-bearing wall buildings.
Application— Minimum seismic strengthening standards for buildings specified in Appendix Chapter A1 of the California Existing Building Code, except for buildings subject to building standards pursuant to Health and Safety Code (commencing) with Section 17910.
Enforcing agency— State or local agency specified the applicable provisions of law.
Authority cited— Health and Safety Code Section 18934.7.
Reference— Health and Safety Code, Division 13, Part 2.5, commencing with Section 18901.
1.2.1.1 State building. For purposes of this code, a “state building” is a structure for which a state agency or state entity has authority to construct, alter, enlarge, replace, repair or demolish.
1.2.1.2 Enforcement. [CSU, UC, Judicial Council and California Department of Corrections and Rehabilitation] State agencies or state entities authorized to construct state buildings may appoint a building official who is responsible to the agency for enforcement of the provisions of the California Building Standards Code.
Exception: State buildings regulated by other sections of this code remain the enforcement responsibility of the designated entities.
1.2.1.3 Enforcement. Reserved for DGS.
1.2.1.4 Adopting agency identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym BSC .
1.2.2 BSC-CG. Specific scope of application of the agency responsible for enforcement, the enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated. 1. Green building standards for nonresidential occupancies.
Application— All occupancies where no state agency has the authority to adopt green building standards applicable to those occupancies.
Enforcing agency— State or local agency specified by the applicable provisions of law.
Authority cited— Health and Safety Code Sections 18930.5(a), 18938 and 18940.5.
Frequently asked questions
Do I always have to upgrade a route to the street if I alter an interior room?
No. The code requires an accessible path of travel to the altered area (primary entrance, toilet, drinking fountain, public telephones, signs) but exceptions and technical infeasibility findings can limit upgrades; check § 11B-202.4 and document any infeasibility.
If I replace one sink in a restroom, does the whole restroom need to be modified?
If the work is a single-element alteration, only that element must comply — unless that single-element change, when combined with other work, results in alteration of the whole room or space; then the whole room must be made accessible per § 11B-202.3.3.
What counts as “technically infeasible”?
The CBC does not enumerate a single checklist; it requires the enforcing authority to determine infeasibility and to record findings. Infeasibility typically means physical or structural conditions prevent required elements or would cause disproportionate harm; where infeasible, provide equivalent facilitation to the maximum extent feasible. § 11B-202.3.
Are historic buildings exempt from these accessibility upgrades?
Not automatically. Qualified historic buildings may use alternate procedures in Appendix B when standard upgrades would threaten historic significance; the process requires consultation and specific findings. See Appendix B and CEBC guidance.
Where can I find the list of small-scope items that don’t trigger full path-of-travel work?
The exceptions to § 11B-202.4 list typical limited-scope items (altering one entrance, one toilet, repositioning furniture, etc.). Review that exceptions list during project scoping.
More in California Existing Building Code
- Administration and Definitions (Scope, enforcement, code official duties, definitions)
- Provisions for All Compliance Methods (general requirements that apply to all compliance options; Chapter 3 / 3A)
- Seismic retrofit and evaluation (Appendix A and seismic provisions/sections for evaluation and retrofit)
- Referenced Standards and Appendices (Chapter 16 and Appendices A–E, Resource A)
- Repairs (Chapter 4 — repair-specific rules for materials, means of egress, structural, MEP, etc.)
- Alterations — Level 1, Level 2, Level 3 (technical requirements for each alteration level; Chapters 7–9)
- Change of Occupancy and Additions (requirements for occupancy changes and additions; Chapters 10–11)
- Compliance Methods — Prescriptive, Work Area, Performance (Chapters 5, 6–11, 13)
- Relocated Buildings (requirements for buildings moved or relocated; Chapter 14)
- Construction Safeguards (site safety, means of egress and life-safety during construction; Chapter 15)
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California Existing Building Code