New York Building Code: Which Editions Are Adopted

Direct answer

2025 New York State Uniform Fire Prevention and Building Code and 2025 Energy Code, effective 31 December 2025 in New York. The 2025 Building, Residential, Fire and Existing Building Codes of New York State, which incorporate the 2021 and 2024 ICC model code changes, and an Energy Code built on the 2024 IECC and a New York version of ASHRAE 90.1-2022. Between publication of the notice of adoption and 31 December 2025 applicants could use either the 2020 or the 2025 Uniform Code; there was no transition period for the Energy Code. The 2025 provisions banning fossil-fuel equipment in new buildings remain suspended by court order and are not enforceable. This was checked on 2026-10-01 against New York State Department of State, Division of Building Standards and Codes (State Fire Prevention and Building Code Council), which is the source that controls. The cross-state comparison further down this page comes from the ICC adoption chart dated January 2024, so where the two disagree the record above is the newer one.

Content and cited inputs reviewed by Harth team · Published 2026-09-07 · Updated 2026-10-01.

Which codes has New York adopted now?

2025 New York State Uniform Fire Prevention and Building Code and 2025 Energy Code, effective 31 December 2025.

The 2025 Building, Residential, Fire and Existing Building Codes of New York State, which incorporate the 2021 and 2024 ICC model code changes, and an Energy Code built on the 2024 IECC and a New York version of ASHRAE 90.1-2022.

Transition: Between publication of the notice of adoption and 31 December 2025 applicants could use either the 2020 or the 2025 Uniform Code; there was no transition period for the Energy Code. The 2025 provisions banning fossil-fuel equipment in new buildings remain suspended by court order and are not enforceable.

Local adoption: The Uniform Code applies throughout the state except New York City, which writes its own construction codes; the Energy Code applies statewide, and New York City's energy code must be at least as stringent. Local governments may adopt stricter energy codes.

Checked 2026-10-01 against New York State Department of State, Division of Building Standards and Codes (State Fire Prevention and Building Code Council). Confirm the edition and effective date for the specific permit jurisdiction before relying on it.

The cross-state record

For comparison across states, every I-Code the ICC Master I-Code Adoption Chart (January 2024) tracks, as it records New York. Where this disagrees with the record above, the record above is newer:

New York has a recorded edition year for 10 of the 17 codes: 2018 for the building, residential, fire, mechanical, plumbing, fuel gas, residential energy, commercial energy, property maintenance and existing buildings codes. No adoption at all is recorded for the private sewage, green construction, swimming pool and spa, performance, wildland-urban interface, zoning and green building standard codes.

Source: ICC Master I-Code Adoption Chart (January 2024).

How New York compares with its neighbours

Statewide editions in force, checked 2026-10-01; “Local” means no state adoption, “(limited)” a state adoption for some buildings only, and * a state-titled code built on that edition.

New Jersey, Pennsylvania, Connecticut and Massachusetts differ from New York on the building code alone. A practice working across that border is working to two editions, whatever the office standard says.

Where New York sits in the national record

Of the 50 states and the District of Columbia, 10 enforce the 2024 IBC statewide, 0 a later edition, 24 an earlier one, and 17 have no statewide IBC edition in force. New York is at or ahead of the national middle on the building code, so the risk runs the other way: work arriving from a slower-moving state may be drawn to an older edition.

Across all 17 codes the January 2024 ICC chart tracks, New York has a recorded edition for 10, which ranked it 6th of 51. A low count is not a gap in regulation — it usually means the state legislates through its own documents, or leaves the discipline to local adoption.

What the chart does and does not tell you

The chart's own legend matters more than the numbers:

• An edition year means one or more state or local agencies adopted that edition. It does not mean every building in the state is designed to it.
• “Some jurisdictions only” is the chart's X: the code is in use somewhere in the state but is not the standard for all buildings.
• “Not adopted” is a blank cell — no state or local jurisdiction reported adopting that code.
• “State-written code” means the state publishes its own document in place of the model edition, so the model text is a reference, not the law.

ICC states plainly that not every jurisdiction notifies it of an adoption, and this chart is dated January 2024. Treat it as the starting point for a search, never as the answer.

How to confirm the edition that governs a New York project

1. Open New York State Department of State, Division of Building Standards and Codes (State Fire Prevention and Building Code Council) and find the currently adopted code list with its effective date.
2. Check whether the permit authority for the project address is the state or a local programme with its own adoption.
3. Read the state amendments alongside the model edition — an amended table or definition changes the requirement even when the edition matches.
4. Record the permit application date. A code change usually applies from an effective date, and applications filed before it are normally reviewed under the previous edition.
5. Get the answer in writing from the authority having jurisdiction before it drives a design decision.

New York code-basis worksheet

Fill this in once per project and keep it with the drawing set. Every row is a question a plan reviewer can ask, and the answer changes with the address and the application date, not with the state.

This worksheet records a determination; it does not make one. The authority having jurisdiction decides which edition and which amendments apply.

Where can you explore related guidance?

• Explore all code adoption guidance
• New Jersey Building Code: Which Editions Are Adopted
• Pennsylvania Building Code: Which Editions Are Adopted
• Connecticut Building Code: Which Editions Are Adopted
• Massachusetts Building Code: Which Editions Are Adopted

Sources and method

Adopted editions transcribed from the ICC Master I-Code Adoption Chart (January 2024), reproduced with the chart's own legend so an “X” is not mistaken for a statewide adoption. ICC notes that not all jurisdictions report their adoptions and publishes updates at iccsafe.org/adoptions. The current edition, its effective date and the state amendments are published by New York State Department of State, Division of Building Standards and Codes (State Fire Prevention and Building Code Council), which controls.

Source links

• iccsafe.org

• iccsafe.org

• dos.ny.gov