Concerns development of accessory dwelling units.

This bill defines accessory dwelling units (ADUs) as second homes attached or detached from a main single-family dwelling, requiring them to be at least 30% of the main unit’s size or 1,000 square feet. It prohibits municipalities from banning ADUs on single-family lots or imposing restrictions like passageways between units, separate utility billing, minimum age requirements, or limits on occupants’ relationships. Homeowners and local governments are directly affected, as the bill standardizes ADU rules statewide while allowing municipalities to limit short-term rentals. The bill does not override building codes or require sprinklers in ADUs if the main house is exempt. (Bill A 3710, introduced 2026-01-13)