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Large turnout as committee weighs state limits on local rules for accessory dwelling units
Summary
House Bill 577, which would allow one accessory dwelling unit (ADU) of up to 950 square feet by right on single‑family lots across New Hampshire, drew broad testimony from housing advocates, builders and municipal planning voices at a Committee on Commerce hearing.
House Bill 577, a broad proposal to expand accessory dwelling unit (ADU) rights statewide, drew the largest turnout of the committee day and sharply divided testimony.
Representative Joe Alexander, sponsor and chair of the House Committee on Housing, said the bill responds to a statewide shortage of housing. The proposal would allow one ADU up to 950 square feet by right, attached or detached, preserve limited local control (for example, aesthetic standards and sewer capacity), and prohibit municipalities from imposing certain restrictions that the sponsor called “unnecessary barriers.” "This bill balances the need for local oversight with fundamental right of property owners," Alexander said.
Proponents included business and housing groups: the Business & Industry…
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