NYC ADUs Made Simple

Everything you need to know about building an ADU in New York City.

An ADU (Accessory Dwelling Unit) is a secondary living space located on the same property as a primary home. In New York City, these units are officially known as Ancillary Dwelling Units. They can be created by converting a basement or attic, adding to the main home, or building a freestanding structure in the backyard.
In December 2024, New York City updated its zoning laws to allow ADU construction on many properties with one- or two-family homes. The best way to find out if your lot qualifies is to request a free feasibility assessment from our team.
We make the ADU process straightforward and cost-effective. From zoning and design to permitting and construction, our team guides you every step of the way.
Our three most popular detached ADU models range from $300 to $350 per square foot, depending on size, layout, site conditions, and finishes. Final pricing is confirmed after the plans are approved by the city.
Most ADUs in NYC are completed in 3 to 6 months, depending on size and complexity.
Yes. All ADUs require approval from the NYC Department of Buildings (DOB). We handle the entire permitting process for you.
In most cases, yes. If your ADU meets DOB and zoning requirements, it can be used as a long-term rental to generate passive income.
Yes. Many homeowners use HELOCs, construction loans, or other financing products. We can connect you with trusted NYC-based lenders.
Yes. ADU size and placement depend on your property’s zoning district, lot size, and site conditions. We’ll help you understand exactly what’s allowed on your site.