CEBC · California Existing Building Code

What egress, exit-sign and two-way communications provisions apply for Level 3?

If your project is a CEBC Level 3 alteration, treat means‑of‑egress per CEBC §804 and add the CEBC §905 requirements: provide artificial lighting in exit enclosures from the highest work‑area floor to the exit discharge, install exit signs per the CBC, and—if the building has elevators and CBC §1009.8 applies—install the required listed two‑way communications at elevator landings.

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Last reviewed: July 6, 2026

What the code requires — 2-4 sentences

For a Level 3 alteration the California Existing Building Code (CEBC) requires that means-of-egress provisions follow the CEBC §905.1 direction to apply §804 generally, with two specific additions: egress lighting (from the highest work‑area floor to the floor of exit discharge) and exit signs must be provided per the California Building Code (CBC) requirements (§905.2–§905.3). Where the building has elevator service, two‑way communications are required where CBC §1009.8 applies; CEBC §905.4 points you to that CBC provision.

The single most important rule: for Level 3 work the CEBC makes you follow the CEBC means‑of‑egress rules in §804, plus provide the specific lighting, exit signs and (where elevators exist) two‑way communications required in §905.2–§905.4.

Requirements in detail

1) Controlling text (short)

  • CEBC §905.1: means of egress must comply with CEBC §804 except where 905.2–905.3 add requirements.
  • CEBC §905.2: require artificial lighting within the exit enclosure from the highest work‑area floor to the floor of exit discharge (CBC requirements apply).
  • CEBC §905.3: require exit signs from the highest work‑area floor to the floor of exit discharge (CBC requirements apply).
  • CEBC §905.4: in buildings with elevator service, provide a two‑way communication system where CBC §1009.8 requires it.

2) Decision table — when each requirement applies

Decision dimension Required value / trigger What to provide Code reference
Work classification Level 3 alteration Apply §804 means‑of‑egress rules; see below for specifics §905.1 (CEBC)
Area of application From highest work‑area floor down to floor of exit discharge Means‑of‑egress lighting and exit signs for those exit enclosures/egress paths §905.2–§905.3 (CEBC)
Lighting level (normal/emergency) Per CBC requirements (e.g., minimum 1 fc at walking surface; stairways higher levels under usage/emergency) Provide artificial illumination and emergency power per CBC §1008 CEBC §905.2 → CBC §1008
Exit signs Where means‑of‑egress from highest work‑area floor to exit discharge exists Install exit signs complying with CBC §1013 (illumination, tactile where required) CEBC §905.3 → CBC §1013
Two‑way communications Building has elevator service and CBC §1009.8 conditions are met (e.g., elevator landings 1+ stories above/below exit discharge) Provide two‑way communications per CBC §1009.8 (audible & visible, listed, fire‑command/central control connection) CEBC §905.4 → CBC §1009.8/1009.8.1

3) Key features of the referenced CBC requirements (summary)

  • CBC §1008 (means‑of‑egress illumination) sets the illumination levels, emergency power duration and locations to be powered on emergency systems and is the technical source for the CEBC lighting requirement referenced in §905.2.
  • CBC §1013 (exit signs) covers illumination, listing (UL 924), tactile (raised character and braille) locations and acceptable technologies — CEBC §905.3 requires compliance with these CBC provisions.
  • CBC §1009.8 (two‑way communication) requires a listed two‑way system at elevator landings on accessible floors one or more stories above/below the level of exit discharge; systems must provide audible and visible signals and connect to the fire command center or approved central control (UL 2525 / NFPA 72). It also includes multiple exceptions (see next section).

Exceptions & special cases

  • CEBC §904 and §803 (Level 3 fire protection) may add or change requirements for sprinkler and fire‑alarm upgrades that interact with egress lighting and exit signage — always coordinate with the fire provisions.
  • CBC §1009.8 contains specific exceptions to the elevator‑landing two‑way communications requirement (examples: where an area of refuge provides the system, floors served by ramps, service/freight/private/residence elevators, Group I‑2 and I‑3 exceptions). CEBC §905.4 points to those CBC rules.
  • CEBC §804 (the means‑of‑egress chapter adopted for alterations) has its own scope limits: the requirements apply where the work area includes exits or corridors shared by more than one tenant and may extend beyond the work area to the entire floor where specified. Read §804 carefully to determine how far its requirements reach.

Common mistakes

  • Assuming CEBC §905 replaces §804: In fact §905.1 points you back to §804 for means‑of‑egress rules; 905.2–905.4 only add specific lighting, signage and communications obligations. Don’t skip §804.
  • Installing two‑way communications at every elevator regardless of the CBC triggers and exceptions — CEBC §905.4 requires the CBC §1009.8 thresholds be met before installing; check the CBC exceptions first.
  • Overlooking tactile exit signage and low‑level/photoluminescent signage requirements where CBC §1013 or accessibility chapters require them. CEBC §905.3 directs you to the CBC rules for specifics.
  • Forgetting to provide emergency power and required illumination levels per CBC §1008 for exit enclosures and exit discharge paths (CEBC §905.2 references the CBC).

Worked example — office building Level 3 alteration

Scenario: a six‑story office building is undergoing a Level 3 alteration that covers more than 50% of the building area. The highest work‑area floor is the 6th floor. The building has passenger elevators. The level of exit discharge is the ground floor.

  1. Apply CEBC §804 to means of egress in the work area and throughout the floor as required by §804 (scope and shared‑egress rules).
  2. Provide artificial lighting inside the stair enclosures and exit enclosures from the 6th floor down to the floor of exit discharge per CEBC §905.2, using CBC illumination standards (minimum 1 footcandle at the walking surface for general egress; stairways may need higher illumination when in use and emergency power per CBC §1008).
  3. Install exit signs for the egress paths serving the 6th‑floor work area down to exit discharge in accordance with CBC §1013 (listed signs, illuminated, tactile where required).
  4. Because the building has elevators, determine whether CBC §1009.8 applies to elevator landings (e.g., accessible landings one or more stories above/below level of exit discharge). If it does, provide a listed two‑way communications system at the required elevator landing(s) that connects to the fire command center or approved central control and provides audible and visible signals (UL 2525 / NFPA 72). If an area of refuge already supplies the communications, CBC exceptions may apply.

Related provisions (CEBC & CBC) — quick list

  • CEBC §905.1–§905.4 — Means of egress, lighting, exit signs, two‑way communications (primary controlling CEBC text).
  • CEBC §804 — Means of egress requirements adopted for alterations (scope, application, and floor‑wide reach).
  • CEBC §903, §904 — Fire protection, sprinklers and fire alarm requirements that interact with egress upgrades for Level 3.
  • CBC §1008 — Means‑of‑egress illumination levels and emergency power rules (technical basis for §905.2).
  • CBC §1013 — Exit sign requirements (illumination, listing, tactile), referenced by CEBC §905.3.
  • CBC §1009.8 / §1009.8.1 / §1009.8.2 — Two‑way communication system requirements, system characteristics and signage/instructions at the device.
  • CBC §1026.6 — Two‑way communication requirements for refuge areas (alternative paths where refuge areas don’t contain the system).

Code references

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

  • CEBC § 1009.7.4 High relevance — show source text

    [BE] 1009.7.4 Stairways. S tairways that are part of the means of egress for the exterior area for assisted rescue shall provide a minimum clear width of 48 inches (1219 mm) between handrails. Exception: The minimum clear width of 48 inches (1219 mm) between handrails is not required at stairways serving buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2.

    [BE] 1009.8 Two-way communication. A two-way communication system complying with Sections 1009.8.1 and 1009.8.2 shall be provided at the landing serving each elevator or bank of elevators on each accessible floor that is one or more stories above or below the level of exit discharge. Exceptions:

    1. Two-way communication systems are not required at the landing serving each elevator or bank of elevators where the two-way communication system is provided within areas of refuge in accordance with Section 1009.6.5.

    2. Two-way communication systems are not required on floors provided with ramps conforming to the provisions of Section 1012.

    3. Two-way communication systems are not required at the landings serving only service elevators that are not designated as part of the accessible means of egress or serve as part of the required accessible route into a facility.

    4. Two-way communication systems are not required at the landings serving only freight elevators.

    5. Two-way communication systems are not required at the landing serving a private residence elevator.

    6. Two-way communication systems are not required in Group I-2 or I-3 facilities.

    [BE] 1009.8.1 System requirements. Two-way communication systems shall provide communication between each required location and the fire command center or a central control point location approved by the fire department. Where the central control point is not a constantly attended location, the two-way communication system shall have a timed automatic telephone dial-out capability that provides two-way communication with an approved supervising station or emergency services. The twoway communication system shall include both audible and visible signals. Systems shall be listed in accordance with UL 2525 and installed in accordance with NFPA 72.

    [BE] 1009.8.2 Directions. Directions for the use of the two-way communication system, instructions for summoning assistance via the two-way communication system and written identification of the location shall be posted adjacent to the two-way communication system. Signage shall comply with Chapter 11A, Section 1143A of the California Building Code requirements for visual characters.

    [BE] 1009.9 Signage. Signage indicating special accessibility provisions shall be provided as shown:

    1. Each door providing access to an area of refuge from an adjacent floor area shall be identified by a sign stating: “AREA OF REFUGE.”

    2. Each door providing access to an exterior area for assisted rescue shall be identified by a sign stating: “EXTERIOR AREA FOR ASSISTED RESCUE.”

    Signage shall comply with the ICC A117.1 requirements for visual characters and include the International Symbol of Accessibility. Where exit sign illumination is required by Section 1013.3, the signs shall be illuminated. Additionally, visual characters, raised character and braille signage complying with ICC A117.1 shall be located at each door to an area of refuge and exterior area for assisted rescue in accordance with Section 1013.4.

  • CEBC § 904.1 High relevance — show source text

    904.1 Automatic sprinkler systems. An automatic sprinkler system shall be provided in accordance with Section 903 of the California Building and California Fire Codes.

    904.2 Fire alarm and detection systems. Fire alarm and detection shall be provided in accordance with Section 907 of the California Building Code as required for new construction in accordance with California Fire Code Sections 907 and 1103.7.

    904.2.1 Systems out of service. Existing fire alarm and detection systems shall be maintained in accordance with Section 901.7 of the California Fire Code. Site fire protection during construction shall be in accordance with Chapter 33 of the California Building and California Fire Codes.

    SECTION 905—MEANS OF EGRESS

    905.1 General. The means of egress shall comply with the requirements of Section 804 except as specifically required in Sections 905.2 and 905.3.

    905.2 Means-of-egress lighting. Means of egress from the highest work area floor to the floor of exit discharge shall be provided with artificial lighting within the exit enclosure in accordance with the requirements of the California Building Code .

    905.3 Exit signs. Means of egress from the highest work area floor to the floor of exit discharge shall be provided with exit signs in accordance with the requirements of the California Building Code .

    905.4 Two-way communications systems. In buildings with elevator service, a two-way communication system shall be provided where required by Section 1009.8 of the California Building Code .

    SECTION 906—STRUCTURAL

    [BS] 906.1 General. Where buildings are undergoing Level 3 alterations, the provisions of this section shall apply.

    [BS] 906.2 Existing structural elements resisting lateral loads. Where work involves a substantial structural alteration,the lateral load-resisting system of the altered building shall be shown to satisfy the requirements of Section 1609 of the California Building Code and Section 304.3.2 of this code. Where the building is assigned to Seismic Design Category D or F, supports and attachments for nonstructural components required to serve any portion of the building with a use included in Risk Category IV shall comply with Section 1613 of the California Building Code or shall comply with ASCE 41 using an objective of Position Retention nonstructural performance with the BSE-1E earthquake hazard level.

    Exceptions:

    1. Buildings of Group R occupancy with not more than five dwelling or sleeping units used solely for residential purposes that are altered based on the conventional light-frame construction methods of the California Building Code or in compliance with the provisions of the California Residential Code .
    2. Where the intended alteration involves only the lowest story of a building, structural components of the lateral load resisting system above that story need not comply with this section.

    [BS] 906.3 Seismic Design Category F. Where the building is assigned to Seismic Design Category F, the lateral force-resisting system of the altered building shall meet the requirements of Section 1609 of the California Building Code and Section 304.3.2 of this code. Supports and attachments for nonstructural components serving any portion of the building with a use included in Risk Cate- gory IV shall comply with Section 1613 of the California Building Code or shall comply with ASCE 41 using an objective of Position Retention nonstructural performance with the BSE-1E earthquake hazard level.

  • CEBC § 903.2.1 High relevance — show source text

    903.2.1 Separation required. Where the work area is in any attached dwelling unit in Group R-3 or any multiple single-family dwelling (townhouse), walls separating the dwelling units that are not continuous from the foundation to the underside of the roof sheathing shall be constructed to provide a continuous fire separation using construction materials consistent with the existing wall or complying with the requirements for new structures. Work shall be performed on the side of the dwelling unit wall that is part of the work area.

    Exception: Where alterations or repairs do not result in the removal of wall or ceiling finishes exposing the structure, walls are not required to be continuous through concealed floor spaces.

    903.3 Interior finish. Interior finish in exits serving the work area shall comply with Section 802.4 between the highest floor on which there is a work area to the floor of exit discharge.

    903.4 Enhanced classroom acoustics. In Group E occupancies, where the work area is a Level 3 alteration, enhanced classroom acoustics shall be provided in all classrooms with a volume of 20,000 cubic feet (565 m [3] ) or less. Enhanced classroom acoustics shall comply with the reverberation time in Section 808 of ICC A117.1.

    2025 CALIFORNIA EXISTING BUILDING CODE 9-3

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    ALTERATIONS—LEVEL 3

    SECTION 904—FIRE PROTECTION

    904.1 Automatic sprinkler systems. An automatic sprinkler system shall be provided in accordance with Section 903 of the California Building and California Fire Codes.

    904.2 Fire alarm and detection systems. Fire alarm and detection shall be provided in accordance with Section 907 of the California Building Code as required for new construction in accordance with California Fire Code Sections 907 and 1103.7.

    904.2.1 Systems out of service. Existing fire alarm and detection systems shall be maintained in accordance with Section 901.7 of the California Fire Code. Site fire protection during construction shall be in accordance with Chapter 33 of the California Building and California Fire Codes.

    SECTION 905—MEANS OF EGRESS

    905.1 General. The means of egress shall comply with the requirements of Section 804 except as specifically required in Sections 905.2 and 905.3.

    905.2 Means-of-egress lighting. Means of egress from the highest work area floor to the floor of exit discharge shall be provided with artificial lighting within the exit enclosure in accordance with the requirements of the California Building Code .

    905.3 Exit signs. Means of egress from the highest work area floor to the floor of exit discharge shall be provided with exit signs in accordance with the requirements of the California Building Code .

    905.4 Two-way communications systems. In buildings with elevator service, a two-way communication system shall be provided where required by Section 1009.8 of the California Building Code .

    SECTION 906—STRUCTURAL

    [BS] 906.1 General. Where buildings are undergoing Level 3 alterations, the provisions of this section shall apply.

  • CEBC § 1009.8 High relevance — show source text

    1009.8 Two-way communication. A two-way communication system complying with Sections 1009.8.1 and 1009.8.2 shall be provided at the landing serving each elevator or bank of elevators on each accessible floor that is one or more stories above or below the level of exit discharge.

    Exceptions:

    1. Two-way communication systems are not required at the landing serving each elevator or bank of elevators where the two-way communication system is provided within areas of refuge in accordance with Section 1009.6.5.

    2. Two-way communication systems are not required on floors provided with ramps conforming to the provisions of Section 1012.

    3. Two-way communication systems are not required at the landings serving only service elevators that are not designated as part of the accessible means of egress or serve as part of the required accessible route into a facility.

    4. Two-way communication systems are not required at the landings serving only freight elevators.

    5. Two-way communication systems are not required at the landing serving a private residence elevator.

    6. Two-way communication systems are not required in Group I-2 or I-3 facilities.

    1009.8.1 System requirements. Two-way communication systems shall provide communication between each required location and the fire command center or a central control point location approved by the fire department. Where the central control point is not a constantly attended location, the two-way communication system shall have timed, automatic telephone dial-out capability that provides two-way communication with an approved supervising station or emergency services. The two-way communication system shall include both audible and visible signals. Systems shall be listed in accordance with UL 2525 and installed in accordance with NFPA 72.

    1009.8.1.1 Visible communication method. [DSA-AC and HCD 1-AC] A button complying with Section 1138A.4 or Sections 11B- 205 and 11B-309 in the area of refuge shall activate both a light in the area of refuge indicating that rescue has been requested and a light at the central control point indicating that rescue is being requested. A button at the central control point shall acti- vate both a light at the central control point and a light in the area of refuge indicating that the request has been received.

    1009.8.2 Directions. Directions for the use of the two-way communication system, instructions for summoning assistance via the two-way communication system and written identification of the location shall be posted adjacent to the two-way communication system. Signage shall comply with Chapter 11A, Section 1143A or Chapter 11B, Section 11B-703.5 requirements for visual characters.

    1009.9 Signage. Signage indicating special accessibility provisions shall be provided as shown:

    1. Each door providing access to an area of refuge from an adjacent floor area shall be identified by a sign stating, “AREA OF REFUGE.”

    2. Each door providing access to an exterior area for assisted rescue shall be identified by a sign stating, “EXTERIOR AREA FOR ASSISTED RESCUE.”

  • CEBC § 1009.8.1.1 High relevance — show source text

    1009.8.1.1 Visible communication method. [DSA-AC and HCD 1-AC] A button complying with Section 1138A.4 or Sections 11B- 205 and 11B-309 in the area of refuge shall activate both a light in the area of refuge indicating that rescue has been requested and a light at the central control point indicating that rescue is being requested. A button at the central control point shall acti- vate both a light at the central control point and a light in the area of refuge indicating that the request has been received.

    1009.8.2 Directions. Directions for the use of the two-way communication system, instructions for summoning assistance via the two-way communication system and written identification of the location shall be posted adjacent to the two-way communication system. Signage shall comply with Chapter 11A, Section 1143A or Chapter 11B, Section 11B-703.5 requirements for visual characters.

    1009.9 Signage. Signage indicating special accessibility provisions shall be provided as shown:

    1. Each door providing access to an area of refuge from an adjacent floor area shall be identified by a sign stating, “AREA OF REFUGE.”

    2. Each door providing access to an exterior area for assisted rescue shall be identified by a sign stating, “EXTERIOR AREA FOR ASSISTED RESCUE.”

    Signage shall comply with Chapter 11A, Section 1143A and Chapter 11B, Section 11B-703.5, as applicable, requirements for visual characters and include the International Symbol of Accessibility. Where exit sign illumination is required by Section 1013.3, the signs shall be illuminated. Additionally, visual characters, raised character and braille signage complying with Chapter 11A, Section 1143A or Chapter 11B, Sections 11B-703.1, 11B-703.2, 11B-703.3 and 11B-703.5 shall be located at each door to an area of refuge and exterior area for assisted rescue in accordance with Section 1013.4. The International Symbol of Accessibility shall comply with Chapter 11A, Section 1143A or Chapter 11B, Section 11B-703.7.2.1.

    1009.10 Directional signage. Directional signage complying with Chapter 11B, Section 11B-703.5 indicating the location of all other means of egress and which of those are accessible means of egress shall be provided at the following:

    1. At exits serving a required accessible space but not providing an approved accessible means of egress.
    2. At elevator landings.
    3. Within areas of refuge.

    1009.11 Instructions. In areas of refuge, exterior areas for assisted rescue and locations required to provide two-way communications systems complying with Section 1009.8, instructions on the use of the area under emergency conditions shall be posted.

    10-18 2025 CALIFORNIA BUILDING CODE

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    MEANS OF EGRESS

    Signage shall comply with the Chapter 11A, Section 1143A or Chapter 11B, Section 11B-703.5 requirements for visual characters. The instructions shall include all of the following:

    1. Persons able to use the exit stairway do so as soon as possible, unless they are assisting others.
    2. Information on planned availability of assistance in the use of stairs or supervised operation of elevators and how to summon such assistance.
  • CEBC § 1009.8.1 High relevance — show source text

    [BE] 1009.8.1 System requirements. Two-way communication systems shall provide communication between each required location and the fire command center or a central control point location approved by the fire department. Where the central control point is not a constantly attended location, the two-way communication system shall have a timed automatic telephone dial-out capability that provides two-way communication with an approved supervising station or emergency services. The twoway communication system shall include both audible and visible signals. Systems shall be listed in accordance with UL 2525 and installed in accordance with NFPA 72.

    [BE] 1009.8.2 Directions. Directions for the use of the two-way communication system, instructions for summoning assistance via the two-way communication system and written identification of the location shall be posted adjacent to the two-way communication system. Signage shall comply with Chapter 11A, Section 1143A of the California Building Code requirements for visual characters.

    [BE] 1009.9 Signage. Signage indicating special accessibility provisions shall be provided as shown:

    1. Each door providing access to an area of refuge from an adjacent floor area shall be identified by a sign stating: “AREA OF REFUGE.”

    2. Each door providing access to an exterior area for assisted rescue shall be identified by a sign stating: “EXTERIOR AREA FOR ASSISTED RESCUE.”

    Signage shall comply with the ICC A117.1 requirements for visual characters and include the International Symbol of Accessibility. Where exit sign illumination is required by Section 1013.3, the signs shall be illuminated. Additionally, visual characters, raised character and braille signage complying with ICC A117.1 shall be located at each door to an area of refuge and exterior area for assisted rescue in accordance with Section 1013.4.

    [BE] 1009.10 Directional signage. Directional signage complying with Chapter 11B, Section 11B-703.5, indicating the location of all other means of egress and which of those are accessible means of egress shall be provided at the following:

    1. At exits serving a required accessible space but not providing an approved accessible means of egress.
    2. At elevator landings.
    3. Within areas of refuge.

    [BE] 1009.11 Instructions. In areas of refuge, exterior areas for assisted rescue and locations required to provide two-way communications systems complying with Section 1009.8, instructions on the use of the area under emergency conditions shall be posted. Signage shall comply with the ICC A117.1 requirements for visual characters. The instructions shall include all of the following:

    1. Persons able to use the exit stairway do so as soon as possible, unless they are assisting others.

    2025 CALIFORNIA FIRE CODE 10-19

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    MEANS OF EGRESS

    1. Information on planned availability of assistance in the use of stairs or supervised operation of elevators and how to summon such assistance.

    2. Directions for use of the two-way communication system where provided.

    1009.12 Alarms and emergency warning systems and two-way communication systems. Required emergency warning systems shall activate a means of warning the hearing impaired. Emergency warning systems provided as part of the fire-alarm system and two-way communication systems required by Chapter 10 shall be designed and installed in accordance with NFPA 72 as amended in Chapter 80.

    SECTION 1010—DOORS, GATES AND TURNSTILES

  • 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:

    1. 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.
    2. 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 § 1026.4.1 High relevance — show source text

    1026.4.1 Capacity. The capacity of the refuge area shall be computed based on a net floor area allowance of 3 square feet (0.2787 m [2] ) for each occupant to be accommodated therein. Where the horizontal exit also forms a smoke compartment, the capacity of the refuge area for Group I-2, I-3 and R-2.1 occupancies and ambulatory care facilities shall comply with Sections 407.5.3, 408.6.2, 420.6.2 and 422.3.2 as applicable.

    1026.4.2 Number of exits. The refuge area into which a horizontal exit leads shall be provided with exits adequate to meet the occupant requirements of this chapter, but not including the added occupant load imposed by persons entering the refuge area through horizontal exits from other areas. In other than I-3 occupancies, not less than one refuge area exit shall lead directly to the exterior or to an interior exit stairway or ramp.

    Exception: The adjoining compartment shall not be required to have a stairway or door leading directly outside, provided that the refuge area into which a horizontal exit leads has stairways or doors leading directly outside and are so arranged that egress shall not require the occupants to return through the compartment from which egress originates.

    1026.5 Standpipes. Standpipes and standpipe hose connections shall be provided where required by Sections 905.3 and 905.4.

    1026.6 Two-way communication. Where a refuge area does not contain a two-way communication system at an elevator landing or within an area of refuge, a two-way communication system shall be installed in an approved location in a public area and shall comply with Sections 1009.8.1, 1009.8.2 and 1009.11.

    Exception: Two-way communication systems are not required in Group I-2 and I-3 facilities.

    SECTION 1027—EXTERIOR EXIT STAIRWAYS AND RAMPS

    1027.1 General. Exterior exit stairways and ramps serving as an exit component in a means of egress system shall comply with the requirements of this section.

    1027.2 Use in a means of egress. Exterior exit stairways shall not be used as an element of a required means of egress for Group I-2 occupancies. For occupancies in other than Group I-2, exterior exit stairways and ramps shall not be used as an element of a required means of egress for buildings exceeding six stories above grade plane or that are high-rise buildings.

    1027.3 Open side. Exterior exit stairways and ramps serving as an element of a required means of egress shall be open on not less than one side, except for required structural columns, beams, handrails and guards. An open side shall have not less than 35 square feet (3.3 m [2] ) of aggregate open area adjacent to each floor level and the level of each intermediate landing. The required open area shall be located not less than 42 inches (1067 mm) above the adjacent floor or landing level.

    1027.4 Side yards. The open areas adjoining exterior exit stairways or ramps shall be either yards, courts or public ways; the remaining sides are permitted to be enclosed by the exterior walls of the building.

  • CEBC § 1026.4.1 High relevance — show source text

    [BE] 1026.4.1 Capacity. The capacity of the refuge area shall be computed based on a net floor area allowance of 3 square feet (0.2787 m [2] ) for each occupant to be accommodated therein. Where the horizontal exit also forms a smoke compartment, the capacity of the refuge area for Group I-2, I-3 and R-2.1 occupancies and Group B ambulatory care facilities shall comply with Sections 407.5.3, 408.6.2, 420.6.1, 420.6.2 and 422.3.2 of the California Building Code as applicable.

    [BE] 1026.4.2 Number of exits. The refuge area into which a horizontal exit leads shall be provided with exits adequate to meet the occupant requirements of this chapter, but not including the added occupant load imposed by persons entering the refuge area through horizontal exits from other areas. In other than I-3 occupancies, not less than one refuge area exit shall lead directly to the exterior or to an interior exit stairway or ramp.

    Exception: The adjoining compartment shall not be required to have a stairway or door leading directly outside, provided that the refuge area into which a horizontal exit leads has stairways or doors leading directly outside and are so arranged that egress shall not require the occupants to return through the compartment from which egress originates.

    [BE] 1026.5 Standpipes. Standpipes and standpipe hose connections shall be provided where required by Sections 905.3 and 905.4.

    1026.6 Two-way communication. Where a refuge area does not contain a two-way communication system at an elevator landing or within an area of refuge, a two-way communications system shall be installed in an approved location in a public area and shall comply with Sections 1009.8.1, 1009.8.2 and 1009.11.

    Exception: Two-way communication systems are not required in Group I-2 and I-3 facilities.

    SECTION 1027—EXTERIOR EXIT STAIRWAYS AND RAMPS

    [BE] 1027.1 General. Exterior exit stairways and ramps serving as an exit component in a means of egress system shall comply with the requirements of this section.

    [BE] 1027.2 Use in a means of egress. Exterior exit stairways shall not be used as an element of a required means of egress for Group I-2 occupancies. For occupancies in other than Group I-2, exterior exit stairways and ramps shall not be used as an element of a required means of egress for buildings exceeding six stories above grade plane or that are high-rise buildings.

    [BE] 1027.3 Open side. Exterior exit stairways and ramps serving as an element of a required means of egress shall be open on not less than one side, except for required structural columns, beams, handrails and guards. An open side shall have not less than 35 square feet (3.3 m [2] ) of aggregate open area adjacent to each floor level and the level of each intermediate landing. The required open area shall be located not less than 42 inches (1067 mm) above the adjacent floor or landing level.

    [BE] 1027.4 Side yards. The open areas adjoining exterior exit stairways or ramps shall be either yards, courts or public ways; the remaining sides are permitted to be enclosed by the exterior walls of the building.

  • CEBC § 1023.5 High relevance — show source text

    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 of the California Building Code 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 of the California Building Code .

    [BE] 1023.4 Openings. Interior exit stairway and ramp opening protectives shall be in accordance with the requirements of Section 716 of the California Building Code .

    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.

    [BE] 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 of the California Building Code . There shall not be penetrations or communication openings, whether protected or not, between adjacent interior exit stairways and ramps.

    Exception: Membrane penetrations shall be permitted on the outside of the interior exit stairway and ramp. Such penetrations shall be protected in accordance with Section 714.4.2 of the California Building Code .

    [BE] 1023.6 Ventilation. Equipment and ductwork for interior exit stairway and ramp ventilation as permitted by Section 1023.5 shall comply with one of the following items:

    1. Such equipment and ductwork shall be located exterior to the building and shall be directly connected to the interior exit stairway and ramp by ductwork enclosed in construction as required for shafts.
    2. Where such equipment and ductwork is located within the interior exit stairway and ramp, the intake air shall be taken directly from the outdoors and the exhaust air shall be discharged directly to the outdoors, or such air shall be conveyed through ducts enclosed in construction as required for shafts.
    3. Where located within the building, such equipment and ductwork shall be separated from the remainder of the building, including other mechanical equipment, with construction as required for shafts.
  • CEBC § 405.4.3 Medium relevance — show source text

    405.4.3 Elevators. Where elevators are provided, each compartment shall have direct access to an elevator. Where an elevator serves more than one compartment, an enclosed elevator lobby shall be provided and shall be separated from each compartment by a smoke barrier in accordance with Section 709. Doorways in the smoke barrier shall be protected by fire door assemblies that comply with Section 716, shall comply with the smoke and draft control assembly requirements of Section 716.2.2.1 with the UL 1784 test conducted without an artificial bottom seal, and shall be automatic-closing by smoke detection in accordance with Section 716.2.6.6.

    405.5 Smoke control system. A smoke control system shall be provided in accordance with Sections 405.5.1 and 405.5.2.

    405.5.1 Control system. A smoke control system is required to control the migration of products of combustion in accordance with Section 909 and the provisions of this section. Smoke control shall restrict movement of smoke to the general area of fire origin and maintain means of egress in a usable condition.

    405.5.2 Compartment smoke control system. Where compartmentation is required, each compartment shall have an independent smoke control system. The system shall be automatically activated and capable of manual operation in accordance with Sections 907.2.18 and 907.2.19.

    [F] 405.6 Fire alarm systems. A fire alarm system shall be provided where required by Sections 907.2.18 and 907.2.19.

    [BE] 405.7 Means of egress. Means of egress shall be in accordance with Sections 405.7.1 and 405.7.2.

    [BE] 405.7.1 Number of exits. Each floor level shall be provided with not fewer than two exits. Where compartmentation is required by Section 405.4, each compartment shall have not fewer than one exit and not fewer than one exit access doorway into the adjoining compartment.

    [BE] 405.7.2 Smokeproof enclosure. Every required stairway serving floor levels more than 30 feet (9144 mm) below the finished floor of its level of exit discharge shall comply with the requirements for a smokeproof enclosure as provided in Section 1023.12.

    [F] 405.8 Standby and emergency power. A standby power system complying with Section 2702 shall be provided for the standby power loads specified in Section 405.8.1. An emergency power system complying with Section 2702 shall be provided for the emergency power loads specified in Section 405.8.2.

    [F] 405.8.1 Standby power loads. The following are classified as standby power loads:

    1. Smoke control system.
    2. Ventilation and automatic fire detection equipment for smokeproof enclosures.
    3. Elevators, as required in Section 3003.

    [F] 405.8.2 Emergency power loads. The following are classified as emergency power loads:

    1. Emergency voice/alarm communications systems.
    2. Fire alarm systems.
    3. Automatic fire detection systems.
    4. Elevator car lighting.

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    SPECIAL DETAILED REQUIREMENTS BASED ON OCCUPANCY AND USE

    1. Means of egress and exit sign illumination as required by Chapter 10.

    2. Fire pumps.

  • CEBC § 902.1 Medium 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.

    2025 CALIFORNIA EXISTING BUILDING CODE 9-1

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    9-2 2025 CALIFORNIA EXISTING BUILDING CODE

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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 § 422.3 Medium relevance — show source text

    503 A .16 Reserved.

    503 A .17 Ambulatory care facilities. Where a work area exceeds 50 percent of the building area and the work area includes an existing ambulatory care facility, the following shall be provided:

    1. 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.
    2. 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 are to be incapable of self-preservation at any time.

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    PRESCRIPTIVE COMPLIANCE METHOD

    503 A .18 Reserved.

    503 A .19 Reserved.

    503 A .20 Two-way communications systems. Where the work area for alterations exceeds 50 percent of the building area and the building has elevator service, a two-way communication systems shall be provided where required by Section 1009.8 of the Califor- nia Building Code.

    SECTION 504 A

    RESERVED

    SECTION 505 A

    RESERVED

    SECTION 506 A —CHANGE OF OCCUPANCY

    506 A .1 Compliance. A change of occupancy shall not be made in any building unless that building is made to comply with the requirements of the California Building Code for the use or occupancy. Changes of occupancy in a building or portion thereof shall be such that the existing building is not less complying with the provisions of this code than the existing building or structure was prior to the change. Subject to the approval of the building official, changes of occupancy shall be permitted without complying with all of the requirements of this code for the new occupancy, provided that the new occupancy is less hazardous, based on life and fire risk, than the existing occupancy.

    Exception: The building need not be made to comply with Chapter 16 A of the California Building Code unless required by Section 506 A .5.

    506 A .1.1 Change in function . A change in function shall require compliance with all the functional requirements for new construc- tion in the California Building Code, including requirements in California Building Code Section 1224. Compliance shall be only as necessary to meet the specific provisions and is not intended to require the entire building be brought into compliance.

    Exception: Minimum room clearances, areas and dimensions may meet the requirements of the 2001 California Building Code for existing rooms re-used for a similar purpose, subject to the approval of OSHPD.

    506 A .2 Certificate of occupancy. A certificate of occupancy shall be issued where it has been determined that the requirements for the new occupancy classification have been met.

    506 A .3 Stairways. An existing stairway shall not be required to comply with the requirements of Section 1011 of the California Build- ing Code where the existing space and construction does not allow a reduction in pitch or slope.

  • CEBC § 8-5 Medium relevance — show source text

    803 Fire Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

    804 Means of Egress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

    805 Structural. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

    806 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

    807 Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

    808 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

    809 Energy Conservation. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

    CHAPTER 9 ALTERATIONS—LEVEL 3 . . . . . . . . . . . . . . . . . .9-3

    901 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

    902 Special Use and Occupancy. . . . . . . . . . . . . . . . . . . . . . 9-3

    903 Building Elements and Materials . . . . . . . . . . . . . . . . . 9-3

    904 Fire Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

    905 Means of Egress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

    906 Structural. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

    907 Energy Conservation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

    908 Emergency Responder Communications Enhancement System Coverage. . . . . . . . . . . . . . . . 9-5

    CHAPTER 10 CHANGE OF OCCUPANCY . . . . . . . . . . . . . . .10-3

    1001 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

    1002 Special Use and Occupancy. . . . . . . . . . . . . . . . . . . . . 10-3

    1003 Building Elements and Materials . . . . . . . . . . . . . . . . 10-3

  • CEBC § 709.4.2 Medium relevance — show source text

    Requirements 709.4.2, 1009.6 Signage 1009.10, 1009.11, 1009.9, 1013.4, 1143A, 11B-216, 11B-703 Two-way communication 1009.6.5, 1009.8, 1026.6 Where required 1009.2, 1009.3.3, 1009.4.2 Assembly Occupancy (Group A) 303, 1030 Accessibility Chapters 11A and 11B Alarms and detection 907.2.1

    Area 503, 506, 507, 508 Bleachers (see Bleachers) Folding and telescopic seating (see Bleachers) General 303.1 Grandstands (see Grandstands) Group-specific provisions A-1 303.2

    A-2 303.3

    A-3 303.4

    A-4 303.5

    Motion picture theater 409, 507.12 Special amusement areas 411 Stages and platforms 410 Height 503, 504, 505, 508, 510 Incidental uses 509 Interior finishes Table 803.13, 804 Live load Table 1607.1 Means of egress Aisles 1018.2, 1030.9, 1030.10,

    1030.11

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    INDEX

    Limitations on authority 113.2 Membership of board B101.3 Notice of meeting B101.5 Qualifications 113.3, B101.3.1 Boiler Room

    Exits 1006.2.2.1

    Bolts

    Anchor rods 1901.3 Bonding, Masonry 1805.2.2, 2103.2.2, 2113.3.1, 2510.7 Bottle-Filling Stations 202 Braced Wall Line 202

    Bracing 2308.10 Seismic requirements 2308.10.10.2, 2308.10.6.2, 2308.10.8 Sill anchorage 2308.10.7.3 Spacing 2308.10.1 Support 2308.10.8 Temporary 3103.5 Braced Wall Panel 202 Alternative bracing 2308.10.5.1, 2308.10.5.2

    Connections 2308.10.7 Length 2308.10.4 Location 2308.10.2

    Method 2308.10.3 Brick (see Masonry) Building Area (see Area, Building) 502.1, 503, 505, 506, 507, 508, 510 Demolition 3303

    Existing 101.4.7 Fire walls 706.1 Height (see Height, Building) 502.1, 503, 504, 505, 508, 510 Occupancy classification Chapter 3 Party walls 706.1.1 Relocatable 3113

    Replicable Appendix N Building, Existing 202 Building Department 103 Building Official Duties and powers 103, 104 Qualifications Appendix A Records 104.7

  • CEBC § 914.3.4 Medium relevance — show source text

    914.3.4 Automatic smoke detection. Smoke detection shall be provided in accordance with Section 907.2.13.1.

    914.3.5 Emergency voice/alarm communication system. An emergency voice/alarm communication system shall be provided in accordance with Section 907.5.2.2.

    914.3.6 Emergency responder communication coverage. In-building, two-way emergency responder communication coverage shall be provided in accordance with Section 510.

    914.3.7 Fire command. A fire command center complying with Section 508 shall be provided in a location approved by the fire department.

    914.3.8 Smoke control.

    914.3.8.1 Smoke control system. All portions of high-rise buildings shall be provided with a smoke control system in accordance with California Building Code, Section 909.

    914.3.8.2 Smokeproof exit enclosures. Every exit enclosure in high-rise buildings shall comply with California Building Code, Sections 909.20 and 1023.12. Every required stairway in Group I-2 occupancies serving floors more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access shall comply with Sections 909.20 and 1023.12 of the California Building Code.

    Exception: In high-rise buildings, exit enclosures serving three or less adjacent floors where one of the adjacent floors is the level of exit discharge.

    914.4 Atriums. Atriums shall comply with Sections 914.4.1 and 914.4.2.

    914.4.1 Automatic sprinkler system. An approved automatic sprinkler system shall be installed throughout the entire building.

    Exceptions:

    1. That area of a building adjacent to or above the atrium need not be sprinklered, provided that portion of the building is separated from the atrium portion by not less than a 2-hour fire barrier constructed in accordance with Section 707 of the California Building Code or horizontal assemblies constructed in accordance with Section 711 of the California Building Code, or both.
    2. Where the ceiling of the atrium is more than 55 feet (16 764 mm) above the floor, sprinkler protection at the ceiling of the atrium is not required.

    914.4.2 Fire alarm system. A fire alarm system shall be provided where required by Section 907.2.14.

    914.5 Underground buildings. Underground buildings shall comply with Sections 914.5.1 through 914.5.5.

    914.5.1 Automatic sprinkler system. The highest level of exit discharge serving the underground portions of the building and all levels below shall be equipped with an automatic sprinkler system installed in accordance with Section 903.3.1.1. Waterflow switches and control valves shall be supervised in accordance with Section 903.4.1.

    914.5.2 Smoke control system. A smoke control system is required to control the migration of products of combustion in accordance with Section 909 and provisions of this section. Smoke control shall restrict movement of smoke to the general area of fire origin and maintain means of egress in a usable condition.

    914.5.3 Compartment smoke control system. Where compartmentation is required by Section 405.4 of the California Building Code, each compartment shall have an independent smoke control system. The system shall be automatically activated and capable of manual operation in accordance with Section 907.2.18.

  • CEBC § 1306.1 Medium relevance — show source text

    1306.1

    Dangerous Nonstructural 115.1, 116.1 Structural 104.4, 114.1, 117.1, 202,

    302.1

    Deferred Submittal 106.3.4, 106.6, 202 Definitions 202 Demolition 101.5, 104.3, 106.2.6, 108.5, 113.2, 115.5, 117, 1501.6, 1501.6.1, 1501.7, 1502.1, 1503.1, 1504.1, 1505.2 Department of Building Safety 104.2.4, 105.3, 109.3.8 Disproportionate Earthquake Damage 202, 405.2.2, 502.2

    Egress (see Means of Egress) Electrical A102.1, 105.1, 105.1.1, 105.2, 108.3, 109.3.4, 202, 406, 801.3, 801.4, 806, 1007, 1101.2 Elevator 905.4, 1011.8.3, 1102.2, 1305.2.14, 1305.2.14.1, Table 1305.2.14, Table 1306.1 Emergency Escape and Rescue Openings 202, 505, 506.4, 702.4, 702.5, 702.5.1, 702.6 Emergency Power 804.6.5, 1305.2.15.1 Energy 302.2, 702.7, 708, 809, 907, 1104 Engineer (see Registered Design Professional) Equipment or Fixture 202 Existing (see Building) Existing Building 202 Existing Structure 202 Exit 504.1.4, 802.2.1, 802.4, 802.4.1, 804, 903.1, 903.3, 905.2, 905.3, 1011.5, 1011.5.1, Table 1011.5, 1011.8.2, 1102.2, 1305.2.3.2, 1305.2.6, 1305.2.10.1, 1305.2.11, 1305.2.11.1, 1305.2.12, 1305.2.13, 1305.2.15.1, Table 1305.2.15, Table 1306.1,

    A402 Exit, Horizontal 503.15, 804.10, 1305.2.3.1 Exterior Wall Covering 202 Addition and replacement 309 Automatic sprinkler systems 309.2.1 Exterior Wall Envelope 202 Addition and replacement 309 Automatic sprinkler systems 309.2.1

    Fire Alarm Systems 803.4, 904.2, 1011.2.2,

  • CEBC § 1404.15.1.1 Medium relevance — show source text

    Nailable Substrate 1404.15.1.1, 1404.18.1,

    1404.18.2 Nailing 2303.6, 2304, 2304.10, 2308.10.6.1 Naturally Durable Wood 2304.12 Nominal Loads 1604.2 Nominal Size (Lumber) 2301.2 Noncombustible Building Material 703.4 Noncombustible 202 Noncombustible protection for mass timber 602.4, 722.7 Nurses Stations (see Care Provider Stations) Nursing Homes

    [see Institutional (Group I-2)] 308.3, 407

    Occupancy Accessory 507.1.1, 508.2

    Ceiling height 1003.2 Child care facilities (see Day Care) Configuration 1007 Construction drawings 107.2.3 Convergence 1005.6 Covered and open mall buildings 402.8 Day care facilities 308.5, 310.4.1, 1006.2.2.4

    Distribution 1005.5

    Doors 1005.7, 1006.2, 1010, 1022.2,

    2702.2

    During construction 3303.3, 3310 Elevation change 1003.5 Elevators 403.5.2, 403.6.2, 1003.7, 1009, 3008 Emergency escape and rescue 1031 Encroachment 1005.7 Equipment platform 505.3 Escalators 1003.7

    Evacuation plans 1002.2 Existing buildings 3310 Exit (see Exit) 1022, 1027 Exit access (see Exit Access) 1016, 1021 Exit discharge (see Exit Discharge) 1028 Exit enclosures 1023.2

    Exit passageway 1024 Exit signs 1013, 2702.2 Fire escapes 412.7.3 Fire safety plans 1002.2 Floor surface 804, 1003.4 Gates 1010.4

    Group I-2 407.2, 407.3, 407.4, 1019.4 Group I-3 408.2, 408.3, 408.4, 408.6, 408.8, 1019.4 Guards 1015

    Handrails 1014

    Hazardous materials 414.6.1.2, 415.11.2, 415.11.6.6 Headroom 1003.2, 1003.3 Heliports, Helistops 412.7.3 High-hazard Group H 415.11.2 High-rise 403.5, 403.6 Illumination 1008, 2702.2 Interior finish 803.13, 804 Ladders (see Ladders) Live loads Table 1607.1

    Live/work units 508.5.3 Mezzanines 505.2.2, 505.2.3, 1004.2.2,

  • CEBC § 2103.4 Medium relevance — show source text

    Reinforcement

    Masonry 2103.4 Shotcrete 1908 Religious Worship, Places of Accessibility Chapter 11B Alarms and detection 907.2.1 Balcony 1030.5 Classification 303.1.4, 303.4, 305.1.1, 305.2.1, 308.5.2 Door operations 1010.2.9 Egress 1030 Interior finishes Table 803.13, 804 Unlimited area 507.6, 507.7 Relocating, Building 101.4.7, 107.2.8, 3113 Compliance 3113.1.1 Inspection agencies 3113.4 Manufacturer’s data plate 3113.3 Supplemental information 3113.2 Repairs, Building 101.4.7, 202 Flood 1612.1

    Minor 105.2.2

    Permit required 105.1 Roof, Reroofing 1509, 1512 Residential Hotels (mail receptacles) 420.13.1 Residential Occupancy (Group R) 310 Accessibility Chapter 11A, 11B Alarm and detection 907.2.8, 907.2.9, 907.2.11, 907.2.12, 907.5.2.3.2,

    907.5.2.3.3

    Area 503, 505, 506, 508, 510 Carbon monoxide alarms 915 Cooking 420.10, 420.11 Draftstopping 708.4.3, 718.4 Group provisions Group R-1 (transient) 310.2 Group R-2 (apartment) 310.3 Group R-3 (two dwellings per building) 310.4 Group R-4 (group homes) 310.5 Electric vehicle charging 420.14 Height 503, 504, 505, 508, 510 Incidental uses 509

    Interior finishes Table 803.13, 804 Live load Table 1607.1

    Live/work units 508.5 Means of egress Aisles 1018.5

    Corridors 1020.2, 1020.3

    Doors 1010.1.1 Emergency escape and rescue 1031.2

    Exit signs 1013.1, 1013.2 Single exits 1006.3 Stairway, exit access 1019 Travel distance 1006.3.3, 1017.2,

    1006.2.1

    Mixed occupancies 508.3, 508.4 Accessory 508.2, G112.1 Live/work units 508.5 Parking, private 406.2.8, 406.3 Parking below/above 510.4, 510.7, 510.9

    Special mixed 510.2

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    INDEX

    Means of egress 3310 Protection of pedestrians 3306 Sanitary facilities 3305 Site work 3304

  • CEBC § 4.1 Medium relevance — show source text

    SECTION E106—GENERAL STANDARDS FOR EMERGENCY USES

    E106.1 Scope. The provisions of Sections E106.2 through E106.7 shall apply to all existing structures being repurposed and to all structures relocated to support the response to an emergency.

    E106.2 Intent. The intent of this section is to provide a reasonable level of safety in a structure repurposed for emergency use.

    E106.3 Change of use or occupancy. Existing buildings used in a way that was not originally intended by occupancy class or use shall be allowed without formally changing the occupancy. The previous occupancy and use shall resume upon the conclusion of the emergency . Where the temporary live load of the floor is more than that required by Section 1607 of the California Building Code for the original use, the area designated for the temporary live load shall be posted with placards for the approved live load.

    E106.4 Fire safety provisions. Determination of the fire safety requirements by the code official shall be in accordance with Section E106.4.1 through E106.4.5 in order to make determinations of safe conditions rather than strict adherence to the provisions of the California Fire Code .

    2025 CALIFORNIA EXISTING BUILDING CODE APPENDIX E-3

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    APPENDIX E—TEMPORARY EMERGENCY USES

    E106.4.1 Fire safety and evacuation plans. Fire safety and evacuation plans shall be provided in accordance with Sections 403 and 404 of the California Fire Code . Submittal documents shall be updated where there are any physical changes to the layout of the structure.

    E106.4.2 Training and practice drills. Training of staff and practice drills shall comply with Sections 405 and 406 of the California Fire Code . Structures in place for longer than 30 days shall conduct evacuation drills in accordance with Section 405.3 of the Cali- fornia Fire Code based on the temporary use.

    E106.4.3 Fire protection. An evaluation shall be performed to decide on fire protection needed utilizing NFPA 550.

    E106.4.4 Emergency access. Emergency vehicle access roads shall be approved by the fire code official.

    E106.4.5 Fire watch. A fire watch in accordance with Section 403.11.1 of the California Fire Code shall be permitted to be provided in lieu of other fire protection systems.

    E106.5 Means of egress. Means of egress shall comply with Section 1011.5, in addition to Sections E106.5.1 through E106.5.3.

    Exception: In Group I-2 occupancies, in areas where corridors are used for movement of care recipients in beds, the clear width of ramps and corridors shall be not less than 48 inches (1219 mm).

    E106.5.1 Exit discharge. Exit discharge shall provide access to a public way or to a safe dispersal area in accordance with Section 1028.5 of the California Building Code.

    E106.5.2 Means of egress lighting. The means of egress shall be illuminated when the space is occupied.

    Exception: Sleeping areas.

    E106.5.3 Exit signs. Exit signs shall be provided where the means of egress is not readily identifiable. Exit signs shall be permitted to be illuminated by the lighting provided in the structure.

  • CEBC § 4.2 Medium relevance — show source text

    E106.4.2 Training and practice drills. Training of staff and practice drills shall comply with Sections 405 and 406 of the California Fire Code . Structures in place for longer than 30 days shall conduct evacuation drills in accordance with Section 405.3 of the Cali- fornia Fire Code based on the temporary use.

    E106.4.3 Fire protection. An evaluation shall be performed to decide on fire protection needed utilizing NFPA 550.

    E106.4.4 Emergency access. Emergency vehicle access roads shall be approved by the fire code official.

    E106.4.5 Fire watch. A fire watch in accordance with Section 403.11.1 of the California Fire Code shall be permitted to be provided in lieu of other fire protection systems.

    E106.5 Means of egress. Means of egress shall comply with Section 1011.5, in addition to Sections E106.5.1 through E106.5.3.

    Exception: In Group I-2 occupancies, in areas where corridors are used for movement of care recipients in beds, the clear width of ramps and corridors shall be not less than 48 inches (1219 mm).

    E106.5.1 Exit discharge. Exit discharge shall provide access to a public way or to a safe dispersal area in accordance with Section 1028.5 of the California Building Code.

    E106.5.2 Means of egress lighting. The means of egress shall be illuminated when the space is occupied.

    Exception: Sleeping areas.

    E106.5.3 Exit signs. Exit signs shall be provided where the means of egress is not readily identifiable. Exit signs shall be permitted to be illuminated by the lighting provided in the structure.

    E106.6 Accessibility. A facility that is constructed to be accessible shall be maintained accessible during occupancy.

    E106.7 Temporary connection. The code official shall have the authority to authorize the temporary connection of the building or system to the utility, the source of energy, fuel or power, or the water system or sewer system in accordance with Section 111. Water closets and lavatories shall be either permanent plumbing fixtures installed within the structure or temporary water closets or lavatories, such as chemical toilets or other means approved by the code official.

    E106.7.1 Portable heating, cooling and cooking equipment. Portable heating, cooling and cooking equipment shall be used in accordance with the California Fire Code, their listing and manufacturer’s instructions.

    SECTION E107—USE OF SPECIFIC STANDARDS

    E107.1 Increased occupant load. Allowing for additional occupants in existing buildings shall comply with Sections E107.1.1 through E107.1.3.

    E107.1.1 Authorization. The code official is authorized to allow for an increase in the number of occupants or a change of use in a building or portion of a building during an emergency.

    E107.1.2 Maintenance of the means of egress. The existing means of egress shall be maintained.

    E107.1.3 Sleeping areas. Where a space is used for sleeping purposes, the space shall be equipped with smoke alarms in accordance with Sections 907.2.6.2 and 907.2.11 of the California Fire Code or be provided with a fire watch in accordance with Section 403.11.1 of the California Fire Code . Carbon monoxide alarms shall be installed in accordance with Section 915 of the California Fire Code where the structure uses any fossil fuel or wood burning appliances.

Frequently asked questions

When exactly does CEBC §905 apply versus §804?

CEBC §905.1 directs you to use CEBC §804 for means‑of‑egress rules; §905 then adds three specific items (egress lighting, exit signs, two‑way communications where CBC §1009.8 requires them). In short: follow §804 for general egress compliance, then add what §905.2–905.4 require.

Do I always need two‑way communications for any elevator?

No. CEBC §905.4 points to CBC §1009.8, which requires two‑way communications only where that CBC section’s thresholds are met (for example, elevator landings on accessible floors one or more stories above/below exit discharge). CBC §1009.8 also lists several exceptions (service/freight/private elevators, and certain occupancies). Confirm applicability before installing.

What illumination level should I design for the exit enclosure lighting?

CEBC §905.2 defers to the CBC technical requirements — use CBC §1008 (typical minimum 1 footcandle at walking surface for means of egress; stairways can require higher levels and emergency powered lighting) and provide required emergency‑power duration.

Are tactile exit signs required for Level 3 work?

CEBC §905.3 requires exit signs per the CBC. CBC §1013 identifies where tactile (raised character and braille) exit signs are required (for certain exterior grade‑level exits and other specific doors). Check CBC §1013 to locate tactile‑sign obligations.

If an area of refuge already has a two‑way system, can I avoid installing elevator‑landing units?

Yes — CBC §1009.8 includes an exception where the two‑way communication requirement is satisfied by systems provided within an area of refuge. Confirm the refuge system complies with the CBC system requirements before relying on this exception.

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California Existing Building Code