International Building Code
New York enforces the 2024 IBC, with exceptions
The 2024 International Building Code (IBC) has been in force in New York since Dec 31, 2025. It applies statewide, with exceptions. Adopted by State Fire Prevention and Building Code Council (NYS Department of State); local governments administer and enforce (Executive Law 381). The legal citation is 19 NYCRR Part 1221 (incorporates the BCNYS by reference; Part 1219 defines it); Executive Law Article 18.
Record of adoption
Edition in force
2024 IBC
2025 Building Code of New York State
Verified
- In force since
- Legal citation
- 19 NYCRR Part 1221 (incorporates the BCNYS by reference; Part 1219 defines it); Executive Law Article 18
- Adopted by
- State Fire Prevention and Building Code Council (NYS Department of State); local governments administer and enforce (Executive Law 381)
- Second reading
- Applies
- Statewide, with exceptions
- Also called
- 2025 BCNYS, BCNYS, 19 NYCRR Part 1221
DOS says the 2025 books are based on the 2024 ICC books with New York modifications, but the BCNYS preface itself does not name the IBC edition.
Exceptions
- New York City enforces its own codes: the 2022 NYC Building Code, a custom code based on the 2015 IBC (Local Law 126 of 2021, effective Nov 7, 2022)
- Local governments can obtain Code Council approval of more restrictive local standards (Executive Law 379, as cited on the Code Council page)
How New York adopts the IBC
The State Fire Prevention and Building Code Council (19 members, supported by the Department of State) adopts and amends the Uniform Code (19 NYCRR Parts 1219-1229) by rule under Executive Law Article 18, with notice in the State Register; the statute requires only that it periodically review the code, and that the secretary (the Secretary of State) hold hearings and approve code changes before they take effect (Exec. Law 377(1)). The 2025 cycle: adopted Jul 25, 2025, State Register notice Oct 1, 2025, amended rule adopted Dec 5, 2025 (State Register Dec 24, 2025), effective Dec 31, 2025. No legislative approval, review or update schedule was found in Executive Law 377 or Energy Law 11-103.
Cycle. Irregular; no statutory schedule. The previous Uniform Code and Energy Code amendments took effect May 12, 2020, and the current ones Dec 31, 2025.
Laws, rulings, and other actions
- Other actionCode Council amended rule (Amended Notice of Adoption) for the 2025 Uniform Code and Energy Code
Amended the 2025 code books and rules (for example dropping the model-code ASHRAE 90.1 from the referenced standards); effective Dec 31, 2025, with no transition period, State Register notice Dec 24, 2025.
How it was checked
Verified
Two separate readings of the state’s own record agree, and the passage is on file word for word.
Read twice: a second, blind reading of the state’s record agreed with the first on .
The state’s record was last read on , from 11 source pages.
Evidence 13 sources
Sources for the record itself come first, the state’s own records ahead of others. A label marks a source about something else, such as an exception. A source marked secondary is not the state’s own record.
“The publication entitled “2025 Building Code of New York State” (publication date: July 2025),”
“The 2025 BCNYS is incorporated by reference in Part 1221 of this Title.”
19 NYCRR Part 1219 (2025 text)New York State Department of Statedos.ny.gov (opens in a new tab)Administrative codeRetrieved “The effective date of the 2025 NYS Uniform Code is December 31, 2025.”
“Uniform Code (19 NYCRR Parts 1219 to 1229)”
Notice of AdoptionNew York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “On July 25, 2025, the State Fire Prevention and Building Code Council (the “Code Council”) adopted rules”
Notice of AdoptionNew York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “NYS specific code books which are based on the 2024 International Code Council books with New York modifications.”
“The rules became effective on December 31, 2025.”
NYCRR Changes to the 2025 Codes (Code Outreach Program Issue 2026-1, Feb 3, 2026)New York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “adopt new text based primarily upon the 2024 editions of model codes developed and published by the ICC”
Appendix B: Regulatory Impact Statement, Uniform Code (proposed rule)New York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “RESPONSE TO COMMENT 17: The Uniform Code books are based on the 2024 I-Codes.”
Assessment of Public Comments (Uniform Code)New York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “based on the 2024 International Code Council (ICC) books with New York State specific amendments included.”
Division of Building Standards and Codes Frequently Asked QuestionsNew York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “It is applicable in every municipality of the State except the City of New York”
“which was permitted to retain its own code unless the Code Council”
Administration and Enforcement of the Uniform Fire Prevention and Building Code (DOS PDF)New York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “It is applicable in every part of the State with the exception of New York City, which is currently permitted”
“to retain its own code.”
Uniform Fire Prevention and Building Code (DOS page)New York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved “Executive Law § 381 requires local government to administer and enforce the Uniform Code within its boundaries.”
Legal Memorandum LG03: NYS Uniform Fire Prevention and Building Code, What Elected Officials Need to KnowNew York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved About an exception
“New York City is allowed to adopt separate building codes than the rest of the state.”
“New York City has an approved local energy code.”
Division of Building Standards and Codes Frequently Asked QuestionsNew York State Department of Statedos.ny.gov (opens in a new tab)Agency pageRetrieved About an exception
“This is a fully integrated custom code based on the 2015 International Building Code.”
“This code is part of the 2022 NYC Construction Codes, effective as of November 7, 2022.”
2022 NYC Building Code (CityStore product page)City of New York (CityStore)a856-citystore.nyc.gov (opens in a new tab)Agency pageRetrieved About an exception
“Local Law 126 of 2021 enacted the 2022 NYC Construction Codes, which go into effect on November 7, 2022.”
Buildings Bulletin 2022-007NYC Department of Buildingsnyc.gov (opens in a new tab)Agency pageRetrieved