New Hampshire Zoning & Land Use Laws
Zoning regulations, ADU laws, short-term rental rules, and land use policies for New Hampshire. Source-cited from state legislation and municipal codes.
Total Cities
221
Total Counties
10
ADU State Law
Yes
Lot Split Law
No state law
Cottage Food Law
Yes
Cities With Data
0
New Hampshire ADU Law
New Hampshire has a statewide ADU law (New Hampshire RSA 674:71-73 — Accessory Dwelling Units). See the official source for key provisions and current requirements.
View full New HampshireADU law details →Cottage Food Law
New Hampshire has a cottage food law. See your state's official agriculture or health department website for current regulations and permit requirements.
State Preemption Active
New Hampshire state law preempts local zoning ordinances in several areas. Local governments cannot enact rules stricter than the state baseline.
Learn about New Hampshirezoning preemption →Recent Legislative Changes
2017 — RSA 674:71-73 (2016 session, Chapter 6) · Verified June 20, 2026 · Source
Source: New Hampshire RSA 674:71-73 — Accessory Dwelling Units. Last verified April 5, 2026. View source