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State Land Use Enacted Legislation

Bill # State Year Party Topic

SB 532

MT 2025 R Accessory dwelling units regulations, Allow ADUs where single-family homes are permitted, By-right zoning, Deadlines, Streamline hearings

Provided by Furman

Summary

  • The act revises county zoning laws to allow for accessory dwelling units.
  • In jurisdictional areas where the board of county commissioners has enabled zoning regulations, the regulations must allow a minimum of one accessory dwelling unit by right on a lot or parcel that contains a single-family dwelling. It removed some sizing restrictions and parking requirements.
  • It also prohibits certain regulations in relation to accessory dwelling units, and allows a county to charge a fee to applications to create accessory dwelling units.
  • A person qualifies for a 15-day expedited review from the certificate of subdivision approval if the person intends to add an ADU to a parcel with existing public water and wastewater service.

Provided by lawmakers

Bill Title

Revise county zoning to allow accessory dwelling units

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