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New state ADU law changes local permitting; planning board to review pending application
Summary
House Bill 577, signed by the governor, allows accessory dwelling units by right and removes some conditional-use requirements; the town's planning board will consider the effect on a pending application.
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The select board reviewed the effect of a recently signed state law expanding rights for accessory dwelling units and advised staff and the planning board to proceed accordingly.
House Bill 577 allows attached and detached ADUs by right in many circumstances and removes some conditional-use or special-exception requirements, the board was told. Town staff consulted the New Hampshire Municipal Association and legal counsel and reported that a pending planning-board application seeking a conditional use is likely moot under the new law.
Why it matters: The change reduces the local permitting steps for some ADU projects but does not remove town authority over technical standards such as setbacks, septic compliance and other site-specific requirements. Town officials told the select board they will ensure applicants still meet state health and septic rules and local dimensional rules.
What the board asked staff to do: The planning board chair was told the issue should be put on the planning board’s agenda for its next meeting. Staff will clarify which pending applications are affected and inform applicants of the legal change.
Background: Town staff said state guidance and NHMA legal advice indicate towns may still regulate objective technical standards (setbacks, septic capacity, parking counts within limits) but cannot require conditional-use approval where the new statute applies. The planning board will consider how to adjust its procedures and staff guidance accordingly.

