Zoning › State preemptions › New York

NYC City of Yes for Housing Opportunity — ADU Legalization (Local Laws 126 & 127 of 2024) (NY)

Tracked preemption from the New York overlay bundle.

Overview

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Effective
2024-12-05
Sunset
—
Authority
state
Scope
state:NY
Other New York preemptions
NY Freshwater Wetlands Act — 2022 Amendment Lower ThresholdNY Real Property Law Article 12-D — Statewide Short-Term Rental Registry FrameworkNY Multiple Dwelling Law §26(3) — NYC Residential FAR Cap Lifted (Enabling)NY Real Property Tax Law §485-x — Affordable Neighborhoods for New Yorkers (NYC Tax Abatement)NY Real Property Tax Law §467-m — NYC Office-to-Residential Conversion Tax IncentiveNY Real Property Tax Law §421-a Extender — NYC Vested-Project Completion ExtensionNYC Local Law 18 — Short-Term Rental Booking Platform Registration (Preserved)NY Executive Order 30 — Pro-Housing Community Funding Conditionality

Trigger predicate

When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.

AND
  • city.is_nyc == True
  • parcel.base_zone_category ∈ {res_sf, res_2f}

Preempted fields

2 fields on the base district schema are rewritten when the trigger fires.

FieldOpValueNote
base_districts[category=res_sf].allowed_usesaddadu
base_districts[category=res_2f].allowed_usesaddadu

Citation

Authority source
NYC Local Laws 126 and 127 of 2024 (building-code side); NYC Zoning Resolution amendments via City of Yes for Housing Opportunity
§ NYC LL 126/127 of 2024
https://www.nyc.gov/site/buildings/codes/adu.page

Research notes

NYC-only. There is NO state ADU mandate in NY outside NYC — A.4854 and A.6778 (2025 session) remain in committee. Outside NYC, ADU permissibility is purely local. HCR Plus One ADU grant program (up to $125,000/homeowner) is voluntary and does not override local zoning.