ACCESSIBILITY
Cols
Summary
Accessibility rules come from several overlapping sources: the federal 2010 ADA Standards, the technical standard ICC A117.1 referenced by the building code, IBC Chapter 11 scoping, and the Fair Housing Act for housing. The notes here follow the 2010 ADA Standards by element, with the building code and housing rules called out where they differ.
Types
- Accessible Assembly Seating and Special Occupancies
2010 ADA Standards rules for wheelchair spaces, companion seats, aisle seats, and assistive listening in assembly areas, plus dressing rooms and other special rooms. - Accessible Controls, Counters, and Work Surfaces
2010 ADA Standards rules for accessible sales and service counters, check-out aisles, dining and work surfaces, benches, and self-service shelves. - Accessible Doors and Entrances
2010 ADA Standards rules for accessible entrances and doors, covering clear width, maneuvering clearances, hardware, thresholds, closers, and automatic doors. - Accessible Dwelling Units
Accessibility rules for housing and lodging, covering Type A and Type B dwelling units, Fair Housing Act requirements, and ADA hotel guest rooms. - Accessible Parking and Passenger Loading
2010 ADA Standards rules for the number, size, and layout of accessible parking spaces, van spaces, access aisles, and passenger loading zones. - Accessible Routes
2010 ADA Standards rules for accessible routes, covering width, slope, passing spaces, surfaces, changes in level, and protruding objects. - Accessible Signage
2010 ADA Standards rules for accessible signs, covering tactile and braille room signs, exit door signs, mounting heights, and the International Symbol of Accessibility. - Accessible Toilet Rooms and Plumbing Fixtures
2010 ADA Standards rules for accessible toilet rooms, water closets, urinals, lavatories, showers, tubs, grab bars, and drinking fountains. - Ramps, Stairs, and Elevators
2010 ADA Standards rules for ramps, curb ramps, stairs, handrails, elevators, and platform lifts that carry people between levels. - Reach Ranges and Clear Floor Space
2010 ADA Standards rules for turning space, clear floor space, knee and toe clearance, reach ranges, and operable parts.
Scope and application
- Americans with Disabilities Act (ADA): a federal civil rights law. Its 2010 ADA Standards for Accessible Design set the technical requirements for state and local government facilities and places of public accommodation, and for commercial facilities
- IBC Chapter 11: the building code's accessibility chapter, which says where accessible features are required (scoping) and refers to ICC A117.1 for the technical details
- ICC A117.1: the consensus technical standard for accessible and usable buildings, referenced by the I-Codes; it parallels the ADA Standards but is not identical
- Fair Housing Act (FHA): federal law that sets design and construction requirements for covered multifamily housing
- IRC: detached one- and two-family dwellings and townhouses are outside the scope of IBC Chapter 11; the FHA design requirements exclude detached single-family houses, duplexes, triplexes, and multistory townhouses
- The strictest of the applicable requirements governs a project, and the building code does not replace the ADA. Passing building code review does not establish ADA compliance
- State and local codes often add or replace the model requirements; some states publish their own accessibility chapters
Editions and adoption
Always verify the adopted code edition and local amendments for the project jurisdiction.
Governing editions
| Code or regulation | Edition cited | Notes |
|---|---|---|
| 2010 ADA Standards for Accessible Design | 2010 | Federal; no newer edition has been adopted |
| International Building Code (IBC) | 2024 | Chapter 11 titles verified; 2027 edition published October 2026 |
| ICC A117.1 | Latest adopted | 2024 I-Codes reference A117.1-2017; 2027 I-Codes reference A117.1-2026 |
| Fair Housing Act design and construction requirements | Federal | Buildings of four or more units first occupied after March 13, 1991 |
- The 2010 ADA Standards are the technical basis of these notes because they are published as a single federal text. Where the adopted building code or a state code is more stringent, the stricter rule governs
Enforcement and administration
- ADA: enforced through federal agencies and civil action; local building officials do not enforce the ADA, but many review plans for the building code accessibility chapter
- Building code accessibility chapter: enforced by the local building official through plan review and inspection
- Fair Housing Act: enforced by HUD and private action; it applies even where local code review does not check it
- Owners and designers carry responsibility for compliance with all applicable rules
How the code is organized
2010 ADA Standards
| Part | Holds | Note |
|---|---|---|
| Chapter 2 Scoping | How many accessible elements are required (routes, parking, toilets, signs, assembly seating, lodging) | Per element note |
| Chapter 3 Building blocks | Floor surfaces, turning space, clear floor space, reach, protruding objects, operable parts | Reach Ranges and Clear Floor Space; Accessible Routes |
| Chapter 4 Accessible routes | Walking surfaces, doors, ramps, curb ramps, elevators, lifts | Accessible Routes; Accessible Doors and Entrances; Ramps, Stairs, and Elevators |
| Chapter 5 General site and building elements | Parking, loading zones, stairs, handrails | Accessible Parking and Passenger Loading; Ramps, Stairs, and Elevators |
| Chapter 6 Plumbing elements | Drinking fountains, toilet rooms, fixtures, grab bars | Accessible Toilet Rooms and Plumbing Fixtures |
| Chapter 7 Communication elements | Signs, telephones, two-way communication | Accessible Signage |
| Chapter 8 Special rooms | Dressing rooms, wheelchair spaces, guest rooms, medical care | Accessible Assembly Seating and Special Occupancies; Accessible Dwelling Units |
| Chapter 9 Built-in elements | Dining and work surfaces, benches, counters | Accessible Controls, Counters, and Work Surfaces |
| Chapter 10 Recreation facilities | Amusement rides, boating, golf, play areas, pools | Runner-up notes |
IBC 2024 Chapter 11 sections
| Section | Title |
|---|---|
| 1101 | General |
| 1102 | Compliance |
| 1103 | Scoping requirements |
| 1104 | Accessible route |
| 1105 | Accessible entrances |
| 1106 | Parking and passenger loading facilities |
| 1107 | Motor-vehicle-related facilities |
| 1108 | Dwelling units and sleeping units |
| 1109 | Special occupancies |
| 1110 | Other features and facilities |
| 1111 | Recreational facilities |
| 1112 | Signage |
Using the code
The path through an accessibility review:
- Identify which rules apply (ADA, building code, FHA, state code) and which edition of each
- Lay out the site arrival points, parking, and entrances under Accessible Parking and Passenger Loading, Accessible Doors and Entrances, and Accessible Routes
- Provide vertical circulation under Ramps, Stairs, and Elevators
- Size toilet rooms and fixtures under Accessible Toilet Rooms and Plumbing Fixtures
- Reach, clearances, and controls under Reach Ranges and Clear Floor Space and Accessible Controls, Counters, and Work Surfaces
- Add signs under Accessible Signage
- Housing and lodging: Accessible Dwelling Units; assembly spaces: Accessible Assembly Seating and Special Occupancies
Referenced standards
| Standard | Edition | Required by | Applies to |
|---|---|---|---|
| 2010 ADA Standards for Accessible Design | 2010 | Federal rule | All accessibility notes |
| ICC A117.1 | Latest adopted | IBC 2024, Chapter 11 | All accessibility notes |
| ANSI/BHMA A156.10, power-operated pedestrian doors | 2024 | 2010 ADA Standards, Section 404.3 | Accessible Doors and Entrances |
| ANSI/BHMA A156.19, power-assist and low-energy doors | Latest adopted | 2010 ADA Standards, Section 404.3 | Accessible Doors and Entrances |
| HUD Fair Housing Act Design Manual | Latest | FHA design and construction requirements | Accessible Dwelling Units |
Sources
- U.S. Access Board: 2010 ADA Standards (full text), https://www.access-board.gov/ada/
- UpCodes: 2024 IBC Chapter 11 accessibility (Department of Defense adoption, section titles), https://up.codes/viewer/department-of-defense/ibc-2024/chapter/11/accessibility
- National Fair Housing Alliance: new construction fair housing accessibility requirements, https://www.equalhousing.org/fair-housing-topics/new-construction-fair-housing-accessibility-requirements/