Committee hears bill to legalize small accessory dwelling units statewide; municipal groups urge caution

Feb 23, 2026

Representative Herring presented HB 1166 to allow accessory dwelling units (ADUs) of 400 square feet or less by right on residential property to increase housing options. Municipal associations warned of infrastructure and zoning impacts; the committee held the item as a hearing-only and asked the sponsor to meet with members to tighten language.

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Representative Herring told the committee House Bill 1166 would remove what he called unnecessary zoning barriers and allow homeowners to construct secondary dwellings of 400 square feet or less—commonly called tiny homes, carriage houses or granny flats—while preserving local authority over building codes, septic systems and historic districts.

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