Accessory Dwelling Units (ADU) in New Hampshire
The New Hampshire Accessory Dwelling Units statute (RSA 674:71-73) became law in 2017. The intent of the law is to expand the supply of housing in New Hampshire communities without further land development, as well as to encourage efficient use of existing housing stock and infrastructure, and provide an affordable housing option in communities. The statute defines accessory dwelling units (ADUs) as residential living units that are within or attached to a single family dwelling, and provide independent living facilities for one or more persons.
New Hampshire's ADU Law (RSA 674:71-73) Explained >>
NHHFA has published two ADU guides: one targeted to homeowners and one for municipal officials; click on the images below to download the guide PDFs.
- NH Office of Strategic Initiatives ADU Information Resources (website)
- Nationally known ADU expert Kol Peterson gave a series of community presentations in October 2018, sponsored by NHHFA, about accessory dwelling units. Watch his presentation in Portsmouth, along with the Q&A, here: https://www.youtube.com/watch?v=-ILpgPSmAfk
- Link to Backdoor Revolution: The Definitive Guide to ADU Development by Kol Peterson http://www.buildinganadu.com/
- AARP ADU Guide "The ABCs of ADUs"
- ADU Resources
- Fair Housing Enforcement - Occupancy Standards; Notice of Statement of Policy/Keating Memo (U.S. Department of Housing and Urban Development)