New York City on Wednesday rolled out a new push to help homeowners create accessory dwelling units, or ADUs, positioning backyards, basements and attics as part of the city’s broader response to the housing shortage.
The initiative centers on a new “ADU for You” platform, designed as a one-stop resource for property owners looking to add smaller, independent living spaces to their homes. The site includes a step-by-step guidebook, a growing library of pre-approved building plans, and digital tools that allow homeowners to assess whether their property qualifies and estimate potential costs. The goal is to simplify what has often been a confusing mix of zoning rules, permitting requirements and financing hurdles.
City officials are also reopening applications for the Plus One ADU program, which provides both financial and technical support to eligible homeowners. Backed by city funding and grants from New York State Homes and Community Renewal, the program offers up to $395,000 per project. It is administered in partnership with Restored Homes Housing Development Fund Corporation and is intended to help cover design, construction and compliance costs.
“One of the solutions to the housing crisis can be found in our backyards, our attics, or our basements – in an Ancillary Dwelling Unit. That's why our administration is making it easier and more affordable to build an ADU through a library of pre-approved plans and new financing options,” said Mayor Zohran Mamdani.
Demand for the program has already proven strong. When it first launched, more than 1,300 homeowners applied within two weeks, prompting the city to pause new applications in early 2024. Its return signals a renewed effort to expand small-scale housing options in lower-density neighborhoods, where new development is often limited.
The administration is also introducing a streamlined permitting pathway tied to its pre-approved plan library. The initial rollout includes 11 designs that have already undergone a preliminary review by the Department of Buildings for code compliance. Homeowners who select one of these options can work directly with the original design professionals to adapt plans to their property, potentially speeding up approvals and reducing costs.
Officials say the effort builds on recent zoning changes under the City of Yes for Housing Opportunity, which expanded where one- and two-family homeowners can legally add ADUs. The changes are expected to unlock new housing in areas that have historically seen little growth while preserving neighborhood character.
Housing leaders view ADUs as a flexible solution with multiple benefits. For homeowners, they offer a chance to generate rental income or create space for extended family. For older residents, they can make it easier to remain in place by offsetting rising costs or accommodating caregivers nearby. For the city, they represent a way to gradually increase housing supply without large-scale redevelopment.
“Ancillary dwelling units have the potential of unlock thousands of safe, quality homes for New Yorkers in low density neighborhoods across the city,” said Buildings Commissioner Ahmed Tigani.
