Arpit Jain 12 min February 23, 2026

Navigating New York Accessibility Codes: A Guide to ADA vs. ICC A117.1

The Direct Answer: Complying with Accessibility Codes in New York

In New York State and New York City, projects must comply with both the state/city building codes (which adopt ICC A117.1) and the federal Americans with Disabilities Act (ADA). When a dimensional conflict exists between the two, the design must follow the provision that provides the greater level of accessibility.

Compliance with the New York State or NYC Building Code is reviewed and approved by the local building department, but this does not certify compliance with the federal ADA, which is enforced separately by the Department of Justice and through private lawsuits. The design professional is responsible for ensuring the design meets the most stringent requirements of all applicable codes and laws.

Key Takeaways for New York Projects:

• Dual Compliance is Mandatory: A building must meet the accessibility requirements of the locally adopted building code and the federal ADA Standards for Accessible Design.
• Most Restrictive Applies: Where requirements differ, the one providing more access (e.g., larger maneuvering clearance, lower reach range) must be followed.
• NY State Code: The 2020 Building Code of New York State (BCNYS) adopts the ICC A117.1-2017 standard as the technical basis for accessibility requirements in BCNYS Chapter 11.
• NYC Code: The 2022 New York City Building Code (NYC BC) also adopts ICC A117.1-2017 as its primary accessibility standard in NYC BC Chapter 11, with specific city amendments.
• Separate Enforcement:
  • Local Building Department: Enforces the BCNYS or NYC BC (and by reference, ICC A117.1).
  • U.S. Department of Justice (DOJ): Enforces the ADA, a federal civil rights law. A local Certificate of Occupancy does not protect a building owner or designer from an ADA lawsuit.

Standard / Law	Authority	Enforcement Body	Scope in New York
BCNYS / NYC BC	State / City Law	Local Building Dept. / NYC DOB	Prescriptive building requirements for new construction, alterations, and changes of occupancy.
ICC A117.1-2017	Referenced Standard	Local Building Dept. / NYC DOB	The technical "how-to" standard for accessibility adopted by the BCNYS and NYC BC.
2010 ADA Standards	Federal Civil Rights Law	U.S. Dept. of Justice, Private Lawsuits	Minimum accessibility standards for public accommodations and commercial facilities nationwide.

Why Navigating NY Accessibility Codes is Critical

For architects, engineers, and contractors in New York, understanding the relationship between local codes and federal law is not just a matter of good practice—it's a critical risk management issue. The dual-track system of code compliance and civil rights law creates a common and costly pitfall: designing a building that receives a Certificate of Occupancy from the local jurisdiction but remains vulnerable to a federal ADA lawsuit.

The process typically works like this:

1. Design: The architect designs the building to meet the requirements of the BCNYS or NYC Building Code, which includes the detailed technical provisions of ICC A117.1-2017.
2. Plan Review: The local building department (or the NYC Department of Buildings) reviews the construction documents for compliance with their adopted code. They are not responsible for verifying ADA compliance.
3. Construction & Inspection: The building is constructed and inspected based on the approved, code-compliant plans.
4. Post-Occupancy: The building owner remains liable for any ADA violations, which can be identified through DOJ investigations or private litigation, years after the project is complete.

Failing to synthesize the requirements of both ICC A117.1 and the ADA can lead to expensive retrofits, legal fees, and reputational damage. Therefore, design professionals must proactively identify and resolve any conflicts by consistently applying the most restrictive provision.

---

Detailed Answers to Key Questions

For an accessible entrance in a building subject to the BCNYS, if there's a dimensional conflict between the maneuvering clearances specified in ICC A117.1-2017 and the federal 2010 ADA Standards, which standard must the design follow for NYS code compliance?

The design must satisfy the minimum requirements of both standards. In practice, this means the design must follow the specific dimension or requirement that provides a greater degree of accessibility. A plan reviewer for the local Authority Having Jurisdiction (AHJ) will only enforce the BCNYS, but the design professional is legally and ethically obligated to meet the ADA as well.

To achieve compliance with New York State law, the design must adhere to the 2020 Building Code of New York State (BCNYS). Chapter 11 of the BCNYS, "Accessibility," explicitly adopts and amends ICC A117.1-2017, Accessible and Usable Buildings and Facilities, as the technical standard.

However, the 2010 ADA Standards for Accessible Design is a separate federal civil rights law that applies to nearly all public accommodations and commercial facilities.

How to Handle a Conflict:

Let's analyze a hypothetical conflict in maneuvering clearance at a door. Imagine a scenario where the standards required different clearances for a front approach to the pull side of a swinging door:

• Standard A (e.g., ICC A117.1): Requires a minimum of 18 inches of clearance on the latch side.
• Standard B (e.g., ADA): Requires a minimum of 24 inches of clearance on the latch side.

In this case, the designer must provide 24 inches of clearance.

• Providing 24 inches satisfies the requirements of both Standard A (since 24" > 18") and Standard B.
• Providing only 18 inches would get a permit under Standard A but would violate federal law under Standard B.

While the BCNYS and the 2010 ADA have been largely harmonized in recent years, subtle differences can still exist, especially regarding reach ranges, clear floor space at specific elements, and certain restroom configurations. It is the architect's or engineer's professional responsibility to perform a detailed comparison and apply the "most restrictive" rule to every accessible element in the project to ensure full compliance and mitigate liability.

Does the NYC building code require accessible bathrooms in small restaurants?

Yes, the New York City Building Code unequivocally requires accessible bathrooms in restaurants, regardless of size, for all new construction and most significant alterations. The notion of a "small restaurant" exception for accessibility does not exist for new buildings under the current code.

The governing code is the 2022 New York City Building Code. The key requirements are found in Chapter 11, "Accessibility."

Key Code Provisions:

• Where Required (NYC BC §1109.2): In assembly and mercantile occupancies (which include restaurants), all public and common-use toilet rooms and bathing facilities must be accessible.
• Single-User Toilet Rooms (NYC BC §1109.2.1): Where toilet rooms are provided, and each serves only one person at a time, each of those single-user toilet rooms must be accessible. This is a common scenario in smaller restaurants. The dimensions and features of these rooms must comply with ICC A117.1 Section 603.
• Customer Facilities (NYC BC §2902.1.2): When a restaurant provides toilet facilities for customers, those facilities must be accessible. If a restaurant has customer seating, it is generally required to provide customer toilets.

Alterations in Existing Buildings:

The rules are slightly different for alterations to existing buildings, but the requirement for accessibility remains strong.

• Primary Function Areas (NYC BC §1107): When an alteration affects a "primary function area" (like the main dining room of a restaurant), the path of travel to that area must be made accessible. This path of travel includes the restrooms serving the area.
• Disproportionate Cost (NYC BC §1107.7): The cost of making the path of travel accessible is only required up to 20% of the total cost of the alteration to the primary function area. While this can provide some relief, it is not a blanket exemption. The owner must still make accessibility improvements up to that 20% threshold.
• Technical Infeasibility: In rare cases where providing full compliance is structurally or physically impossible (documented and approved by the NYC Department of Buildings), some exceptions may be granted. However, the burden of proof is very high.

Finally, even if a restaurant is not undergoing alterations, it is still subject to the ADA's requirement for "readily achievable barrier removal," which obligates businesses to remove accessibility barriers in existing facilities when it is easy to accomplish without much difficulty or expense.

---

Additional Supporting Sections

Jurisdictional Variations: New York State vs. New York City

While both NYS and NYC adopt ICC A117.1-2017, designers must be aware of key differences in their building codes and enforcement. NYC's dense urban environment and history of local legislation result in a more complex regulatory landscape.

• Governing Code:
  • NYS: 2020 Building Code of New York State (based on the 2018 I-Codes).
  • NYC: 2022 New York City Construction Codes (based on the 2015 I-Codes but with extensive local amendments and local laws).
• Amendments: The NYC Building Code contains numerous amendments to the model code text, including Chapter 11. These must be reviewed carefully. For example, NYC has specific requirements for accessible seating in assembly spaces and unique rules for existing buildings.
• Local Laws: NYC has many "Local Laws" that function as standalone regulations or amendments to the code. For example, previous Local Law 58 of 1987 established many of the city's foundational accessibility requirements that are now integrated into the code.
• Enforcement Body:
  • NYS: Enforced by local city, town, or village building departments, which can vary in their interpretation and rigor.
  • NYC: Enforced centrally by the NYC Department of Buildings (DOB), a large agency with specialized plan examiners and inspectors.

Common Mistakes and Misinterpretations

1. "My plans were approved, so I'm ADA compliant." This is the most dangerous misconception. A building permit only signifies compliance with the local building code. It is not a defense against an ADA claim.
2. "My building is old, so it's 'grandfathered in'." The concept of "grandfathering" does not apply to federal civil rights law. The ADA has ongoing requirements for barrier removal in existing buildings, and alterations trigger significant upgrade requirements.
3. Applying the 20% Disproportionate Cost Rule Incorrectly. For alterations, the 20% rule is not an automatic waiver. It is a cap on spending. The owner must still improve accessibility to the maximum extent feasible within that budget, prioritizing items like the entrance, route to the altered area, and restrooms.
4. Misunderstanding "Technical Infeasibility". This is a very narrow exception, not a loophole. It applies to conditions like an inability to ramp an entrance without exceeding the maximum slope or altering a load-bearing wall where it is structurally impossible. Cost alone is not a valid reason to claim technical infeasibility.

Coordination Considerations for Permitting and Inspection

Successful accessibility compliance requires proactive coordination throughout the project lifecycle.

• Architects & Designers: Must create an "accessibility compliance plan" at the start of the project, cross-referencing ICC A117.1 and the 2010 ADA standards. All differences should be documented, and the most restrictive provision must be shown on the construction documents.
• Plan Reviewers (DOB/AHJ): Their review is strictly limited to the adopted state or city code. They will flag deviations from ICC A117.1 as shown in the BCNYS/NYC BC but will not comment on ADA-only requirements. Do not expect the plan examiner to perform your ADA compliance check.
• Contractors: Must build exactly what is detailed in the approved plans. Field changes, even minor ones, can have significant accessibility implications (e.g., relocating a grab bar by an inch, changing door hardware). All such changes must be reviewed by the designer.
• Inspectors: Will verify that the as-built conditions match the approved construction documents. They use the approved plans as their checklist and are not enforcing the ADA directly. An inspector's sign-off does not absolve the project of ADA liability.

---

Frequently Asked Questions (FAQ)

1. What is the main difference between the ADA and ICC A117.1? The ADA is a federal civil rights law that prohibits discrimination on the basis of disability, with technical standards for buildings. ICC A117.1 is a model technical standard that provides detailed specifications for accessible elements. It only becomes legally enforceable when a jurisdiction like New York State or NYC officially adopts it into their building code.

2. Who enforces the ADA in New York? The U.S. Department of Justice (DOJ) is the primary federal agency for ADA enforcement. However, individuals can also file private lawsuits against non-compliant businesses. Local building departments do not enforce the ADA.

3. Does New York State have its own accessibility code? Yes. The BCNYS Chapter 11, titled "Accessibility," serves as the state's accessibility code. It primarily consists of adopting the ICC A117.1 standard and providing New York-specific amendments.

4. Are historic buildings in NYC exempt from accessibility requirements? No, they are not exempt, but they are subject to special provisions. The code allows for alternative compliance paths if meeting the standard requirements would threaten or destroy the historic significance of a property. This must be determined in consultation with the appropriate historic preservation official.

5. What happens if a new building in NYS meets the building code but not the ADA? The owner can be sued in federal court and may be required by a court order or settlement to make costly renovations to bring the facility into compliance, in addition to paying legal fees.

6. Does the NYC Building Code have stricter accessibility rules than the NYS code? In some specific areas, yes. The NYC code has its own set of amendments and has historically been a leader in accessibility, sometimes resulting in requirements that go beyond the state's baseline. Always consult the current NYC BC for any project in the five boroughs.

7. Are employee-only areas required to be accessible? Yes. Under both the ADA and the building codes, work areas must be designed to allow people with disabilities to approach, enter, and exit the area. This includes accessible doors, corridors, and turning spaces. Specific accommodations at individual workstations are addressed separately under the ADA.

8. Is a "grandfather clause" a valid defense for accessibility non-compliance? Generally, no. For building codes, significant alterations typically require upgrading elements to current standards. For the ADA, there is no "grandfather clause"; businesses have an ongoing obligation to remove barriers where it is readily achievable to do so.

9. Do I need an accessible entrance if my main entrance has stairs? Yes. Every new building must have at least one fully accessible main entrance. For existing buildings, if the main entrance is not accessible, you must provide a clearly marked, alternative accessible entrance on an accessible route.

10. Where can I find the official New York State and NYC building codes online? The New York State codes are available on the Department of State's website and on UpCodes. The New York City Construction Codes are available on the NYC Department of Buildings (DOB) website.