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Check if your property qualifies, browse pre-approved plans, and connect with licensed contractors.
Built on trusted NYC data sources
From eligibility check to move-in day in four simple steps.
Enter your address and get an instant eligibility check based on zoning, lot size, and building class.
Browse 10 HPD pre-approved architectural designs ranging from studios to 2-bedrooms, up to 800 sqft.
Apply for Plus One grants with up to $395,000 in NYC ADU financing to cover construction costs.
Connect with verified, licensed contractors who specialize in NYC ADU construction.
HPD-approved designs ready to build — skip months of architectural review.
NYC property owners are discovering their ADU potential.
“I had no idea my Queens property qualified until I used this tool. The financing breakdown saved me weeks of research.”
— Homeowner, Flushing
“The eligibility checker confirmed what my architect suspected — our lot in Flatbush is perfect for a detached ADU.”
— Homeowner, Brooklyn
“Finally, one place with all the ADU information instead of bouncing between 10 government websites.”
— Property Owner, Staten Island
Whether you own, invest, or rent — NYC's ADU program has something for you.
Check eligibility, browse pre-approved plans, and find licensed contractors to build your ADU.
Check Your PropertyExplore ADU investment opportunities across NYC. Earn returns through financing or partnerships.
Explore OpportunitiesFind ADU rentals in your neighborhood. New, modern housing at accessible price points.
Find ADU RentalsADUs generate strong rental income across all five boroughs. With low vacancy rates and high demand for housing, your investment pays for itself — and then some.
NYC's five boroughs each offer unique ADU opportunities. Queens leads with 28,400 eligible properties, followed by Brooklyn with 21,000. Explore the interactive map to find your borough's potential.
The City of New York's Plus One ADU Program provides forgivable loans and grants to eligible homeowners building accessory dwelling units.
Not sure where to start? Talk to one of our ADU specialists for free. Get personalized guidance on your property's potential, estimated costs, and recommended next steps.
It takes 30 seconds. Enter your address and find out if you can build an ADU.