NY · State directory
New York ADU rules
Official accessory dwelling unit regulations for 16 jurisdictions in New York, plus statewide law.
Not sure which city yet?
We have read the ordinances for 16 New York cities and lined them up side by side: detached vs internal, size limits, owner occupancy, and approval process.
Statewide ADU law
New York has state-level ADU legislation that applies across local jurisdictions. Local rules below may add requirements on top of state law.
Cities
Albany4 sources · verified August 2026Babylon4 sources · verified August 2026Brookhaven5 sources · verified August 2026Buffalo5 sources · verified August 2026Hempstead6 sources · verified August 2026Huntington3 sources · verified August 2026Islip4 sources · verified August 2026Ithaca5 sources · verified August 2026Kingston5 sources · verified August 2026New Rochelle3 sources · verified August 2026New York City5 sources · verified August 2026Rochester4 sources · verified August 2026Syracuse4 sources · verified August 2026White Plains3 sources · verified August 2026Yonkers4 sources · verified August 2026
Counties & regions
Don't see your New York city?
Tell us which city you need and we'll prioritize adding its official rules to the directory.
Request a cityReady to build?
Planning an ADU in New York?
Tell us about your project and we'll match you with vetted local designers and builders as we bring them online. No cost, no obligation.