November 17, 2025
The Revised Law on Accessory Dwelling Units – 2025 Edition
UPDATED
Governor Ayotte signed House Bill 577 on July 15, 2025, relative to accessory dwelling units, substantially amending RSA 674:71 to :73. This document provides local officials with guidance on how to interpret and implement the new law. We also provide a suggested zoning amendment that would ensure compliance with HB 577.
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