New York City building & ADU permits
Recent permit activity, updated continuously.
New York City is the most populous city in the United States, and its 'City of Yes for Housing Opportunity' reforms legalized ADUs across much of the five boroughs. Igni draws NYC filings from DOB NOW and DOB Permit Issuance, published under the NYC Open Data Law, and normalizes them into a single typed feed.
Igni is tracking 22,185 residential and building permits in New York City, NY — including 27 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 10022. The most recent filing Igni tracked was Jul 31, 2026. All records come from NYC OpenData / DOB NOW (Socrata), an official government open-data feed, and are refreshed continuously.
22185
Permits tracked
27
ADU permits
104
Distinct ZIP codes
Jul 31, 2026
Newest permit
Recent permits
A sample of the freshest permits in this jurisdiction — ZIP and city only (no street addresses).
| ZIP | Permit type | ADU type | Valuation | Applied |
|---|---|---|---|---|
| 11228 | Residential | — | $0 | Jul 24, 2026 |
| 10461 | Other | — | $37,480 | Jul 31, 2026 |
| 10007 | Other | — | $8,000 | Jul 30, 2026 |
| 10021 | Other | — | $1,000 | Jul 31, 2026 |
| 11222 | Other | — | $580,000 | Jul 1, 2026 |
| 11212 | Other | — | $60,000 | May 2, 2025 |
| 11355 | Commercial | — | $3,000 | Jul 24, 2026 |
| 10458 | Other | — | $1,000 | Dec 21, 2021 |
| 10019 | Other | — | $50,000 | Nov 12, 2025 |
| 11216 | Residential | — | $32,000 | Nov 17, 2025 |
| 10128 | Other | — | $5,000 | May 11, 2026 |
| 10105 | Other | — | $713,460 | Jul 16, 2025 |
| 10461 | Other | — | $75,000 | Oct 24, 2025 |
| 10453 | Commercial | — | $2,000 | Jul 8, 2026 |
| 11210 | Other | — | $28,275 | Jun 18, 2026 |
| 10305 | Other | — | $28,700 | Jul 27, 2026 |
| 10301 | Other | — | $38,250 | Jul 23, 2026 |
| 10021 | Other | — | $1,000 | Jul 31, 2026 |
| 10065 | Residential | — | $499,905 | Mar 24, 2026 |
| 11355 | Other | — | $25,000 | Jul 31, 2026 |
Top ZIP codes by recent activity
Housing law — New York
Statewide ADU mandates have not passed in New York; the action is in New York City, which legalized ADUs across much of the city and opened basement/ADU filings through DOB NOW.
NYC's 'City of Yes for Housing Opportunity' (adopted December 2024) legalized ADUs, cut parking mandates near transit, and enabled office-to-residential and transit-oriented development.
New York City ADU rules
New York City legalized accessory dwelling units through 'City of Yes for Housing Opportunity,' the citywide zoning overhaul the City Council adopted on December 5, 2024 — the most sweeping change to residential zoning in a generation. The reform allows ADUs (the city also calls them ancillary dwelling units) such as backyard cottages, garage conversions, and basement or attic apartments.
ADUs are permitted only on lots with one- or two-family homes — not rowhouses, townhomes, or attached buildings — and are generally capped at 800 square feet. The property owner must live in either the main home or the ADU. Units are not allowed in historic districts or in the lowest-density contextual zones (R1A, R2A, R3A) unless the lot sits in the Greater Transit Zone. Siting rules require an ADU within 100 feet of the street with a five-foot access path and at least five feet from lot lines; cellar units add egress and sprinkler requirements and are barred in high-flood-risk areas.
Implementation is phased: the Department of Buildings began accepting ADU applications through its DOB NOW: Build portal on September 30, 2025, under Local Laws 126 and 127. A separate path lets some pre-existing basement units — in operation before April 20, 2024, in designated program areas — pursue legalization. New York State has no statewide ADU mandate, so these city rules govern.
This is an informational summary — verify current rules with the city's planning/permitting department; not legal advice.
See also: New York ADU law and what is an ADU?
Data source
Sourced from NYC OpenData / DOB NOW (Socrata). NYC Open Data Law (public records).
Nearby cities — New York
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns New York City permit records into leads.
New York City permit data — FAQ
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Informational only, not legal advice. Headline counts reflect all permits Igni has tracked for this jurisdiction; the table shows recent activity. Housing law changes — verify current statutes before relying on this.