CHBC · California Historical Building Code
Accessibility
The CHBC provides a framework to balance historic preservation with access by allowing documented, case‑by‑case alternatives and equivalent facilitation when strict code compliance would harm historic features.
Last reviewed: July 6, 2026
Overview
The CHBC’s accessibility chapter (Chapter 8-6) provides alternative regulations to facilitate access to and through buildings and properties designated as qualified historical resources; its purpose and scope are set out in § 8‑601. The CHBC is part of the broader Part 8 purpose to preserve and permit continued use of historic buildings while addressing life‑safety and access needs.
The chapter’s approach is to apply the regular accessibility code (Title 24, Part 2, Chapter 11B) unless strict compliance would threaten or destroy historical significance, and to permit item‑by‑item alternatives where necessary (§ 8‑602 and § 8‑603). When alternatives still cannot preserve character‑defining features, the CHBC allows equivalent facilitation — nontraditional designs, technologies, or programmatic measures that provide substantially equivalent access — subject to documentation and review (§ 8‑604).
The chapter applies to public entities (Title II), places of public accommodation and commercial facilities (Title III), and barrier‑removal work, and requires enforcing agencies to document and retain the record of any applied alternatives.
In this section
Code references
Grounded in the retrieved California Historical Building Code — click a citation to read the verbatim passage:
CHBC § 8-503 High relevance — show source text
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MEANS OF EGRESS
SECTION 8-503 — ESCAPE OR RESCUE WINDOWS AND DOORS
Basements in dwelling units and every sleeping room below the fourth floor shall have at least one openable window or door approved for emergency escape which shall open directly into a public street, public way, yard or exit court. Escape or rescue windows or doors shall have a minimum clear area of 3.3 square feet (0.31 m [2] ) and a minimum width or height dimension of 18 inches (457 mm) and be operable from the inside to provide a full, clear opening without the use of special tools.
SECTION 8-504 — RAILINGS AND GUARDRAILS
The height of railings and guard railings and the spacing of balusters may continue in their historical height and spacing unless a distinct hazard has been identified or created by a change in use or occupancy.
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8-6 ACCESSIBILITY
SECTION 8-601 — PURPOSE, INTENT AND SCOPE
8-601.1 Purpose. The purpose of the CHBC is to provide alternative regulations to facilitate access and use by persons with disabilities to and throughout facilities designated as qualified historical buildings or properties. These regulations require enforcing agencies to accept alternatives to regular code when dealing with qualified historical buildings or properties.
8-601.2 Intent. The intent of this chapter is to preserve the integrity of qualified historical buildings and properties while providing access to and use by persons with disabilities.
8-601.3 Scope. The CHBC shall apply to every qualified historical building or property that is required to provide access to persons with disabilities.
- Provisions of this chapter do not apply to new construction or reconstruction/replicas of historical buildings.
- Where provisions of this chapter apply to alteration of qualified historical buildings or properties, alteration is defined in California Building Code (CBC), Chapter 2.
8-601.4 General application. The provisions in the CHBC apply to local, state and federal governments (Title II entities); alteration of commercial facilities and places of public accommodation (Title III entities); and barrier removal in commercial facilities and places of public accommodation (Title III entities). Except as noted in this chapter.
SECTION 8-602 — BASIC PROVISIONS
8-602.1 Regular code. The regular code for access for people with disabilities (Title 24, Part 2, Vol. 1, Chapter 11B) shall be applied to qualified historical buildings or properties unless strict compliance with the regular code will threaten or destroy the historical significance or character-defining features of the building or property.
8-602.2 Alternative provisions. If the historical significance or character-defining features are threatened, alternative provisions for access may be applied pursuant to this chapter, provided the following conditions are met:
- These provisions shall be applied only on an item-by-item or a case-by-case basis.
- Documentation is provided, including meeting minutes or letters, stating the reasons for the application of the alternative provisions. Such documentation shall be retained in the permanent file of the enforcing agency.
SECTION 8-603 — ALTERNATIVES
CHBC § 33.3 High relevance — show source text
Stairway openings in such balconies shall not be less than 22 inches by 44 inches (559 by 1118 mm). The balustrade of each balcony shall not be less than 36 inches (914 mm) high with not more than 9 inches (287 mm) between balusters. 6. Fire escapes shall extend to the roof or provide an approved gooseneck ladder between the top floor landing and the roof when serving buildings four or more stories in height having roofs with less than 4 units vertical in 12 units horizontal (33.3 percent slope). Fire escape ladders shall be designed and connected to the building to withstand a horizontal force of 100 pounds (445 N) placed anywhere on the rung. All ladders shall be at least 15 inches (381 mm) wide, located within 12 inches (305 mm) of the building. Ladder rungs shall be [3] / 4 inch (19.1 mm) in diameter and shall be located 12 inches (305 mm) on center. Openings for roof access ladders through cornices and similar projections shall have minimum dimensions of 30 inches by 33 inches (762 by 838 mm). The length of fire escapes and exit ladder devices shall be limited to that approved by the building official based on products listed by a recognized testing laboratory. 7. The lowest balcony shall not be more than 18 feet (5486 mm) from the ground. Fire escapes shall extend to the ground or be provided with counterbalanced stairs reaching to the ground. 8. Fire escapes shall not take the place of stairways required by the codes under which the building was constructed. 9. Fire escapes shall be kept clear and unobstructed at all times and maintained in good working order.
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MEANS OF EGRESS
SECTION 8-503 — ESCAPE OR RESCUE WINDOWS AND DOORS
Basements in dwelling units and every sleeping room below the fourth floor shall have at least one openable window or door approved for emergency escape which shall open directly into a public street, public way, yard or exit court. Escape or rescue windows or doors shall have a minimum clear area of 3.3 square feet (0.31 m [2] ) and a minimum width or height dimension of 18 inches (457 mm) and be operable from the inside to provide a full, clear opening without the use of special tools.
SECTION 8-504 — RAILINGS AND GUARDRAILS
The height of railings and guard railings and the spacing of balusters may continue in their historical height and spacing unless a distinct hazard has been identified or created by a change in use or occupancy.
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8-6 ACCESSIBILITY
SECTION 8-601 — PURPOSE, INTENT AND SCOPE
8-601.1 Purpose. The purpose of the CHBC is to provide alternative regulations to facilitate access and use by persons with disabilities to and throughout facilities designated as qualified historical buildings or properties. These regulations require enforcing agencies to accept alternatives to regular code when dealing with qualified historical buildings or properties.
CHBC § 8-603.2 High relevance — show source text
8-603.2 Entry. These alternatives do not allow exceptions for the requirement of level landings in front of doors, except as provided in Section 8-603.4.
- Access to any entrance used by the general public and no further than 200 feet (60 960 mm) from the primary entrance.
- Access at any entrance not used by the general public but open and unlocked with directional signs at the primary entrance and as close as possible to, but no further than 200 feet (60 960 mm) from, the primary entrance.
- The accessible entrance shall have a notification system. Where security is a problem, remote monitoring may be used.
8-603.3 Doors. Alternatives listed in order of priority are:
- Single-leaf door which provides a minimum 30 inches (762 mm) of clear opening.
- Single-leaf door which provides a minimum 29 [1] / 2 inches (749 mm) clear opening
- Double door, one leaf of which provides a minimum 29 [1] / 2 inches (749 mm) clear opening.
- Double doors operable with a power-assist device to provide a minimum 29 [1] / 2 inches (749 mm) clear opening when both doors are in the open position.
8-603.4 Power-assisted doors. Power-assisted door or doors may be considered an equivalent alternative to level landings, strikeside clearance and door-opening forces required by the regular code.
8-603.5 Toilet rooms. In lieu of separate-gender toilet facilities as required in the regular code, an accessible unisex toilet facility may be designated.
8-603.6 Exterior and interior ramps and lifts. Alternatives listed in order of priority are:
- A lift or a ramp of greater than standard slope but no greater than 1:10, for horizontal distances not to exceed 5 feet (1525 mm). Signs shall be posted at upper and lower levels to indicate steepness of the slope.
- Access by ramps of 1:6 slope for horizontal distance not to exceed 13 inches (330 mm). Signs shall be posted at upper and lower levels to indicate steepness of the slope.
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ACCESSIBILITY
SECTION 8-604 — EQUIVALENT FACILITATION
Use of other designs and technologies, or deviation from particular technical and scoping requirements, are permitted if the application of the alternative provisions contained in Section 8-603 would threaten or destroy the historical significance or characterdefining features of the historical building or property.
- Such alternatives shall be applied only on an item-by- item or a case-by-case basis.
- Access provided by experiences, services, functions, materials and resources through methods including, but not limited to, maps, plans, videos, virtual reality and related equipment, at accessible levels. The alternative design and/or technologies used will provide substantially equivalent or greater accessibility to, and usability of, the facility.
- The official charged with the enforcement of the standards shall document the reasons for the application of the design and/or technologies and their effect on the historical significance or character-defining features. Such documentation shall be in accordance with Section 8-602.2, Item 2, and shall include the opinion and comments of state or local accessibility officials, and the opinion and comments of representative local groups of people with disabilities. Such documentation shall be retained in the permanent file of the enforcing agency.
CHBC § 8-601.3 High relevance — show source text
8-601.3 Scope. The CHBC shall apply to every qualified historical building or property that is required to provide access to persons with disabilities.
- Provisions of this chapter do not apply to new construction or reconstruction/replicas of historical buildings.
- Where provisions of this chapter apply to alteration of qualified historical buildings or properties, alteration is defined in California Building Code (CBC), Chapter 2.
8-601.4 General application. The provisions in the CHBC apply to local, state and federal governments (Title II entities); alteration of commercial facilities and places of public accommodation (Title III entities); and barrier removal in commercial facilities and places of public accommodation (Title III entities). Except as noted in this chapter.
SECTION 8-602 — BASIC PROVISIONS
8-602.1 Regular code. The regular code for access for people with disabilities (Title 24, Part 2, Vol. 1, Chapter 11B) shall be applied to qualified historical buildings or properties unless strict compliance with the regular code will threaten or destroy the historical significance or character-defining features of the building or property.
8-602.2 Alternative provisions. If the historical significance or character-defining features are threatened, alternative provisions for access may be applied pursuant to this chapter, provided the following conditions are met:
- These provisions shall be applied only on an item-by-item or a case-by-case basis.
- Documentation is provided, including meeting minutes or letters, stating the reasons for the application of the alternative provisions. Such documentation shall be retained in the permanent file of the enforcing agency.
SECTION 8-603 — ALTERNATIVES
8-603.1 Alternative minimum standards. The alternative minimum standards for alterations of qualified historical buildings or facilities are referenced in Section 202.5 of the 2010 ADA Standards for Accessible Design, as incorporated and set forth in federal regulation 28 CFR Pt. 36.
8-603.2 Entry. These alternatives do not allow exceptions for the requirement of level landings in front of doors, except as provided in Section 8-603.4.
- Access to any entrance used by the general public and no further than 200 feet (60 960 mm) from the primary entrance.
- Access at any entrance not used by the general public but open and unlocked with directional signs at the primary entrance and as close as possible to, but no further than 200 feet (60 960 mm) from, the primary entrance.
- The accessible entrance shall have a notification system. Where security is a problem, remote monitoring may be used.
8-603.3 Doors. Alternatives listed in order of priority are:
- Single-leaf door which provides a minimum 30 inches (762 mm) of clear opening.
- Single-leaf door which provides a minimum 29 [1] / 2 inches (749 mm) clear opening
- Double door, one leaf of which provides a minimum 29 [1] / 2 inches (749 mm) clear opening.
- Double doors operable with a power-assist device to provide a minimum 29 [1] / 2 inches (749 mm) clear opening when both doors are in the open position.
8-603.4 Power-assisted doors. Power-assisted door or doors may be considered an equivalent alternative to level landings, strikeside clearance and door-opening forces required by the regular code.
8-603.5 Toilet rooms. In lieu of separate-gender toilet facilities as required in the regular code, an accessible unisex toilet facility may be designated.
CHBC § 8-604 High relevance — show source text
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ACCESSIBILITY
SECTION 8-604 — EQUIVALENT FACILITATION
Use of other designs and technologies, or deviation from particular technical and scoping requirements, are permitted if the application of the alternative provisions contained in Section 8-603 would threaten or destroy the historical significance or characterdefining features of the historical building or property.
- Such alternatives shall be applied only on an item-by- item or a case-by-case basis.
- Access provided by experiences, services, functions, materials and resources through methods including, but not limited to, maps, plans, videos, virtual reality and related equipment, at accessible levels. The alternative design and/or technologies used will provide substantially equivalent or greater accessibility to, and usability of, the facility.
- The official charged with the enforcement of the standards shall document the reasons for the application of the design and/or technologies and their effect on the historical significance or character-defining features. Such documentation shall be in accordance with Section 8-602.2, Item 2, and shall include the opinion and comments of state or local accessibility officials, and the opinion and comments of representative local groups of people with disabilities. Such documentation shall be retained in the permanent file of the enforcing agency. Copies of the required documentation should be available at the facility upon request.
Note: For commercial facilities and places of public accommodation (Title III entities).
Equivalent facilitation for an element of a building or property when applied as a waiver of an ADA accessibility requirement will not be entitled to the Federal Department of Justice certification of this code as rebuttable evidence of compliance for that element.
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8-7 STRUCTURAL REGULATIONS
SECTION 8-701 — PURPOSE, INTENT AND SCOPE
8-701.1 Purpose. The purpose of the CHBC is to provide alternative regulations to the regular code for the structural safety of buildings designated as qualified historical buildings or properties. The CHBC requires enforcing agencies to accept any reasonably equivalent alternatives to the regular code when dealing with qualified historical buildings or properties.
8-701.2 Intent. The intent of this chapter is to encourage the preservation of qualified historical buildings or structures while providing standards for a minimum level of building performance with the objective of preventing partial or total structural collapse such that the overall risk of life-threatening injury as a result of structural collapse is low.
8-701.3 Application. The alternative structural regulations provided by Section 8-705 are to be applied in conjunction with the regular code whenever a structural upgrade or reconstruction is undertaken for qualified historical buildings or properties.
SECTION 8-702 — GENERAL
8-702.1 The CHBC shall not be construed to allow the enforcing agency to approve or permit a lower level of safety of structural design and construction than that which is reasonably equivalent to the regular code provisions in occupancies which are critical to the safety and welfare of the public at large, including, but not limited to, public and private schools, hospitals, municipal police and fire stations and essential services facilities.
8-702.2 Nothing in these regulations shall prevent voluntary and partial seismic upgrades when it is demonstrated that such upgrades will improve life safety and when a full upgrade would not otherwise be required.
CHBC § 8-6 High relevance — show source text
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APPENDIX A Col2 Col3 Col4 CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY Title II
Public EntitiesTitle III
Private EntitiesTitle III
Barrier RemovalSECTION 8-601 PURPOSE, INTENT, SCOPE
**8-601.1 Purpose.**The purpose of the CHBC is to provide alternative regulations to facilitate
access and use by persons with disabilities to and throughout facilities designated as quali-
fied historical buildings or properties. These regulations require enforcing agencies to
accept alternatives to regular code when dealing with qualified historical buildings or
properties.
**8-601.2 Intent.**The intent of this chapter is to preserve the integrity of qualified historical
buildings and properties while providing access to and use by persons with disabilities.
**8-601.3 Scope.**The CHBC shall apply to every qualified historical building or property that
is required to provide access to persons with disabilities.
1.Provisions of this chapter do not apply to new construction or reconstruction/replicas of
historical buildings.
2. Where provisions of this chapter apply to alteration of qualified historical buildings or
properties, alteration is defined in_ California Building Code_ (CBC), Chapter 2.
8-601.4 General application. The provisions in the CHBC apply to local, state and federal
governments (Title II entities); alteration of commercial facilities and places of public
accommodation (Title III entities); and barrier removal in commercial facilities and places of
public accommodation (Title III entities). Except as noted in this chapter.Applies Applies Applies SECTION 8-602 — BASIC PROVISIONS
8-602.1 Regular code. The regular code for access for people with disabilities (Title 24, Part
2, Vol.1, Chapter 11B) shall be applied to qualified historical buildings or properties unless
strict compliance with the regular code will threaten or destroy the historical significance or
character-defining features of the building or property.
**8-602.2 Alternative provisions.**If the historical significance or character-defining features
are threatened, alternative provisions for access may be applied pursuant to this chapter,
provided the following conditions are met:
1.These provisions shall be applied only on an item-by-item or case-by-case basis.
2.Documentation is provided, including meeting minutes or letters, stating the reasons
for the application of the alternative provisions. Such documentation shall be retained
in the permanent file of the enforcing agency.Applies Applies Applies Section 8-603 — ALTERNATIVES
**8-603.1 Alternative minimum standards.**The alternative minimum standards for alter-
ations of qualified historical buildings or facilities are referenced in Section 202.5 of the_ 2010_
ADA Standards for Accessible Design, as incorporated and set forth in federal regulation 28
CFR Pt. 36.
**8-603.2 Entry.CHBC § 8-6 High relevance — show source text
CHAPTER 8-6 ACCESSIBILITY . . . . . . . . . . . . . . . . . . . . . . . . 11
Section
8-601 Purpose, Intent and Scope . . . . . . . . . . . . . . . . . . . . . . 11
8-602 Basic Provisions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8-603 Alternatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8-604 Equivalent Facilitation. . . . . . . . . . . . . . . . . . . . . . . . . . 12
CHAPTER 8-7 STRUCTURAL REGULATIONS. . . . . . . . . . . . . 13
Section
8-701 Purpose, Intent and Scope . . . . . . . . . . . . . . . . . . . . . . 13 8-702 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8-703 Structural Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8-704 Nonhistorical Additions and
Nonhistorical Alterations . . . . . . . . . . . . . . . . . . . . . . . 13
8-705 Structural Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8-706 Lateral Load Regulations. . . . . . . . . . . . . . . . . . . . . . . . 14
CHAPTER 8-8 ARCHAIC MATERIALS AND METHODS OF
CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . 15
Section
8-801 Purpose, Intent and Scope . . . . . . . . . . . . . . . . . . . . . . 15 8-802 General Engineering Approaches. . . . . . . . . . . . . . . . . 15 8-803 Nonstructural Archaic Materials. . . . . . . . . . . . . . . . . . 15
8-804 Allowable Conditions for Specific Materials . . . . . . . 15 8-805 Masonry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8-806 Adobe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8-807 Wood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8-808 Concrete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CHBC § 8-1002.1 High relevance — show source text
8-1002.1 The CHBC shall apply to all sites and districts and their features associated with qualified historical buildings or qualified historical districts as outlined in 8-1001.2 Scope.
8-1002.2 Where the application of regular code may impact the associated features of qualified historical properties beyond their footprints, by work performed secondarily, those impacts shall also be covered by the CHBC.
8-1002.3 This chapter shall be applied for all issues regarding code compliance or other standard or regulation as they affect the purpose of this chapter.
8-1002.4 The application of any code or building standard shall not unduly restrict the use of a qualified historical building or property that is otherwise permitted pursuant to Chapter 8-3 and the intent of the State Historical Building Code, Section 18956.
SECTION 8-1003 — SITE RELATIONS
The relationship between a building or property and its site, or the associated features of a district (including qualified historical landscape), site, objects and their features are critical components that may be one of the criteria for these buildings and properties to be qualified under the CHBC. The CHBC recognizes the importance of these relationships. This chapter shall be used to provide context sensitive solutions for treatment of qualified historical buildings, properties, district or their associated historical features, or when work to be performed secondarily impacts the associated historical features of a qualified historical building or property.
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APPENDIX A Col2 Col3 Col4 CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY CHAPTER 8-6—TABLE 1—PROVISION APPLICABILITY Title II
Public EntitiesTitle III
Private EntitiesTitle III
Barrier RemovalSECTION 8-601 PURPOSE, INTENT, SCOPE
**8-601.1 Purpose.**The purpose of the CHBC is to provide alternative regulations to facilitate
access and use by persons with disabilities to and throughout facilities designated as quali-
fied historical buildings or properties. These regulations require enforcing agencies to
accept alternatives to regular code when dealing with qualified historical buildings or
properties.
**8-601.2 Intent.**The intent of this chapter is to preserve the integrity of qualified historical
buildings and properties while providing access to and use by persons with disabilities.
**8-601.3 Scope.**The CHBC shall apply to every qualified historical building or property that
is required to provide access to persons with disabilities.
1.Provisions of this chapter do not apply to new construction or reconstruction/replicas of
historical buildings.
2. Where provisions of this chapter apply to alteration of qualified historical buildings or
properties, alteration is defined in_ California Building Code_ (CBC), Chapter 2.
**8-601.4 General application.CHBC § 8-603.5 High relevance — show source text
**Power-assisted door or doors may be considered an
equivalent alternative to level landings, strikeside clearance and door-opening forces
required by regular code.
8-603.5 Toilet rooms. In lieu of separate-gender toilet facilities as required in the regular
code, an accessible unisex toilet may be designated.
**8-603.6 Exterior and interior ramps and lifts.**Alternatives listed in order of priority are:
1.A lift or a ramp of greater than standard slope but no greater than 1:10, for horizontal
distances not to exceed 5 feet (1525 mm). Signs shall be posted at upper and lower
levels to indicate steepness of the slope.
2.Access by ramps of 1:6 slope for horizontal distance not to exceed 13 inches (330 mm).
Signs shall be posted at upper and lower levels to indicate steepness of the slope.|Applies|Applies|Applies| |SECTION 8-604 — EQUIVALENT FACILITATION
Use of other designs and technologies, or deviation from particular technical and scoping
requirements, are permitted if the application of the alternative provisions contained in
Section 8-603 would threaten or destroy the historical significance or character-defining
features of the qualified historical building or property.
1.Such alternatives shall be applied only on an item-by-item or case-by-case basis.
2.Access provided by experiences, services, functions, materials and resources through
methods including, but not limited to, maps, plans, videos, virtual reality and related
equipment, at accessible levels. The alternative design and/or technologies used will
provide substantially equivalent or greater accessibility to, and usability of, the
facility.
3.The official charged with the enforcement of the standards shall document the reasons
for the application of the design and/or technologies and their effect on the historical
significance or character-defining features. Such documentation shall be in accordance
with Section 8-602.2, Item 2, and shall include the opinion and comments of state or
local accessibility officials, and the opinion and comments of representative local
groups of people with disabilities. Such documentation shall be retained in the
permanent file of the enforcing agency. Copies of the required documentation should
be available at the facility upon request.
** Note:**For commercial facilities and places of public accommodation
(Title III entities).
Equivalent facilitation for an element of a building or property when applied as a waiver
of an ADA accessibility requirement will not be entitled to the Federal Department of
Justice certification of this code as rebuttable evidence of compliance for that element.|Applies|Waivers
If a builder
applies for a
waiver of an ADA
accessibility
requirement for
an element of a
building, he or
she will not be
entitled to
certification’s
rebuttable
evidence of
compliance for
that element. This
limitation on the
certification
determination
should be noted
in any publication
of Chapter 8-6 if
certification is
granted.|Applies| |**Notes:**The regular code for Chapter 8-6 is contained in Title 24, Part 2, Vol.1, Chapter 11B, which contain standards for new construction.
Provisions of this chapter may be used in conjunction with all other provisions of the regular code and ADA regulations.CHBC § 8-1001 Medium relevance — show source text
Section
8-1001 Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8-1002 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8-1003 Site Relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
APPENDIX A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
HISTORY NOTE APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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8-1 ADMINISTRATION
Note: The California Historical Building Code, Part 8 of Title 24, governs for all qualified historical buildings or properties in the State of California.
SECTION 8-101 — TITLE, PURPOSE AND INTENT
8-101.1 Title. These regulations shall be known as the California Historical Building Code and will be referred to herein as “the CHBC.”
8-101.2 Purpose. The purpose of the CHBC is to provide regulations for the preservation, restoration, rehabilitation, relocation or reconstruction of buildings or properties designated as qualified historical buildings or properties (as defined in Chapter 8-2). The CHBC is intended to provide solutions for the preservation of qualified historical buildings or properties, to promote sustainability, to provide access for persons with disabilities, to provide a cost-effective approach to preservation, and to provide for the reasonable safety of the occupants or users. The CHBC requires enforcing agencies to accept solutions that are reasonably equivalent to the regular code (as defined in Chapter 8-2) when dealing with qualified historical buildings or properties.
8-101.3 Intent. The intent of the CHBC is to facilitate the preservation and continuing use of qualified historical buildings or properties while providing reasonable safety for the building occupants and access for persons with disabilities.
SECTION 8-102 — APPLICATION
8-102.1 Application. The CHBC is applicable to all issues regarding code compliance for qualified historical buildings or properties. The CHBC may be used in conjunction with the regular code to provide solutions to facilitate the preservation of qualified historical buildings or properties. The CHBC shall be used by any agency with jurisdiction and whenever compliance with the code is required for qualified historical buildings or properties.
- State or local enforcing agency. The state or local enforcing agency shall apply the provisions of the CHBC in permitting repairs, alterations and additions necessary for the preservation, restoration, reconstruction, rehabilitation, relocation or continued use of a qualified historical building or property when so elected by the private property owner.
- **State agencies.
CHBC § 8-101.1 Medium relevance — show source text
8-101.1 Title. These regulations shall be known as the California Historical Building Code and will be referred to herein as “the CHBC.”
8-101.2 Purpose. The purpose of the CHBC is to provide regulations for the preservation, restoration, rehabilitation, relocation or reconstruction of buildings or properties designated as qualified historical buildings or properties (as defined in Chapter 8-2). The CHBC is intended to provide solutions for the preservation of qualified historical buildings or properties, to promote sustainability, to provide access for persons with disabilities, to provide a cost-effective approach to preservation, and to provide for the reasonable safety of the occupants or users. The CHBC requires enforcing agencies to accept solutions that are reasonably equivalent to the regular code (as defined in Chapter 8-2) when dealing with qualified historical buildings or properties.
8-101.3 Intent. The intent of the CHBC is to facilitate the preservation and continuing use of qualified historical buildings or properties while providing reasonable safety for the building occupants and access for persons with disabilities.
SECTION 8-102 — APPLICATION
8-102.1 Application. The CHBC is applicable to all issues regarding code compliance for qualified historical buildings or properties. The CHBC may be used in conjunction with the regular code to provide solutions to facilitate the preservation of qualified historical buildings or properties. The CHBC shall be used by any agency with jurisdiction and whenever compliance with the code is required for qualified historical buildings or properties.
- State or local enforcing agency. The state or local enforcing agency shall apply the provisions of the CHBC in permitting repairs, alterations and additions necessary for the preservation, restoration, reconstruction, rehabilitation, relocation or continued use of a qualified historical building or property when so elected by the private property owner.
- State agencies. All state agencies shall apply the provisions of the CHBC in permitting repairs, alterations and additions necessary for the preservation, restoration, rehabilitation, safety, relocation, reconstruction or continued use of qualified historical buildings or properties.
8-102.1.1 Additions, alterations and repairs. It is the intent of the CHBC to allow nonhistorical expansion or addition to a qualified historical building or property, provided nonhistorical additions shall conform to the requirements of the regular code (as defined in Chapter 8-2).
8-102.1.2 Relocation. Relocated qualified historical buildings or properties shall be sited to comply with the regular code or with the solutions listed in the CHBC. Nonhistorical new construction related to relocation shall comply with the regular code. Reconstruction and restoration related to relocation is permitted to comply with the provisions in the CHBC.
8-102.1.3 Change of occupancy. For change of use or occupancy, see Chapter 8-3, Use and Occupancy.
8-102.1.4 Continued use. Qualified historical buildings or properties may have their existing use or occupancy continued if such use or occupancy conformed to the code or to the standards of construction in effect at the time of construction, and such use or occupancy does not constitute a distinct hazard to life safety as defined in the CHBC.
8-102.1.5 Unsafe buildings or properties. When a qualified historical building or property is determined to be unsafe as defined in the regular code, the requirements of the CHBC are applicable to the work necessary to correct the unsafe conditions. Work to remediate the buildings or properties need only address the correction of the unsafe conditions, and it shall not be required to bring the entire qualified historical building or property into compliance with regular code.
CHBC § 8-602.2 Medium relevance — show source text
Such documentation shall be in accordance
with Section 8-602.2, Item 2, and shall include the opinion and comments of state or
local accessibility officials, and the opinion and comments of representative local
groups of people with disabilities. Such documentation shall be retained in the
permanent file of the enforcing agency. Copies of the required documentation should
be available at the facility upon request.
** Note:**For commercial facilities and places of public accommodation
(Title III entities).
Equivalent facilitation for an element of a building or property when applied as a waiver
of an ADA accessibility requirement will not be entitled to the Federal Department of
Justice certification of this code as rebuttable evidence of compliance for that element.|Applies|Waivers
If a builder
applies for a
waiver of an ADA
accessibility
requirement for
an element of a
building, he or
she will not be
entitled to
certification’s
rebuttable
evidence of
compliance for
that element. This
limitation on the
certification
determination
should be noted
in any publication
of Chapter 8-6 if
certification is
granted.|Applies| |**Notes:**The regular code for Chapter 8-6 is contained in Title 24, Part 2, Vol.1, Chapter 11B, which contain standards for new construction.
Provisions of this chapter may be used in conjunction with all other provisions of the regular code and ADA regulations.|**Notes:**The regular code for Chapter 8-6 is contained in Title 24, Part 2, Vol.1, Chapter 11B, which contain standards for new construction.
Provisions of this chapter may be used in conjunction with all other provisions of the regular code and ADA regulations.|**Notes:**The regular code for Chapter 8-6 is contained in Title 24, Part 2, Vol.1, Chapter 11B, which contain standards for new construction.
Provisions of this chapter may be used in conjunction with all other provisions of the regular code and ADA regulations.|**Notes:**The regular code for Chapter 8-6 is contained in Title 24, Part 2, Vol.1, Chapter 11B, which contain standards for new construction.
Provisions of this chapter may be used in conjunction with all other provisions of the regular code and ADA regulations.|26 2025 CALIFORNIA HISTORICAL BUILDING CODE
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
HISTORY NOTE APPENDIX
2025 California Historical Building Code California Code of Regulations, Title 24, Part 8
HISTORY:
For prior history, see the History Note Appendix to the California Historical Building Code, 2022 Triennial Edition, effective January 1, 2023.
- Adoption of the 2025 California Historical Building Code, CCR Title 24, Part 8, carrying forward existing amendments from the 2022 edition. Effective on January 1, 2026.
2025 CALIFORNIA HISTORICAL BUILDING CODE 27
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
28 2025 CALIFORNIA HISTORICAL BUILDING CODE
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
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Frequently asked questions
Does the CHBC exempt historic buildings from accessibility requirements?
No. The regular accessibility code (11B) is the starting point; the CHBC permits alternatives only when strict compliance would threaten or destroy historic significance, and those alternatives must be applied case‑by‑case with documented justification (§ 8‑602).
What kinds of alternatives does the CHBC allow?
The CHBC lists prioritized alternatives for features such as entries, doors, ramps, lifts and toilet rooms (see § 8‑603), and references the ADA 2010 standards where appropriate; when physical alternatives are impractical, equivalent facilitation (e.g., accessible programs, virtual experiences) may be used (§ 8‑603, § 8‑604).
Who approves and documents an alternative?
The local or state enforcing agency applies the CHBC and must retain documentation explaining why the regular code threatens historic significance; equivalent facilitation also requires input from accessibility officials and representative disability groups and must be documented in the agency file.
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