On March 18, 2026, the Mamdani administration launched ADU for You, a new website and toolkit designed to help New York City homeowners add an ancillary dwelling unit (ADU) to their property. The platform includes a pre-approved plan library with 11 designs already reviewed and approved by the Department of Buildings. Costs range from approximately $85,000 to $650,000. Design types include detached backyard cottages, units built above a garage, attached additions, attic conversions, and basement apartments. The Plus One ADU program also reopened, offering homeowners up to $395,000 in financial support. All ADU construction is now legal under the City of Yes zoning reforms adopted in December 2024. Visit the ADU for You site at housing.hpd.nyc.gov/adu to explore designs and tools.
Explore the designs: ADU for You – NYC Housing
Watch on YouTube: https://youtube.com/shorts/w1285BQVPV0
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