Alton's ADU ordinance (Zoning §319) hasn't been amended since March 2018 — years before New Hampshire's July 2025 ADU law took effect — so several of…
Read the full Alton ADU guide →State law now guarantees Center Harbor homeowners a detached-ADU option, entrance choice, and nonconforming-lot protection — the town's ADU rules…
Read the full Center Harbor ADU guide →Yes — Laconia allows one ADU (verified with the town), up to 1,000 sq ft.
Read the full Laconia ADU guide →State law now guarantees one ADU by right; Meredith calls it an 'Accessory Apartment' and hasn't touched its rule since 2008, so several of its…
Read the full Meredith ADU guide →Coming soon: Gilmanton.
Get a free personalized ADU report for your property in Belknap County.
Get My Free ADU Report →Wherever a town's rules are stricter than the state floor, the state law controls. Read the full New Hampshire ADU law explainer →