Senate Bill 1415 Summary

• Municipalities with populations exceeding 75,000 must adopt regulations allowing at least one attached, detached, or internal accessory dwelling unit as a permitted use on any lot where single-family dwellings are allowed.

• Permits one additional accessory dwelling unit for each restricted-affordable dwelling unit on the same lot, with maximum size of 75% of the single-family dwelling's gross floor area or 1,000 square feet, whichever is less.

• Prohibits municipalities from requiring matching exterior design, additional parking, familial relationships between occupants, kitchen facilities, street improvements, restrictive covenants, or rear/side setbacks exceeding 5 feet.

• Prohibits restrictions on using either the single-family dwelling or accessory dwelling unit as separately leased long-term rental housing (90+ days or month-to-month).

• If municipalities fail to adopt required regulations by January 1, 2025, accessory dwelling units become allowed without limits on all residential-zoned lots; exempts tribal lands and building/fire code requirements.