SB532

Revise county zoning to allow accessory dwelling units

Complete·5/12/25

Montana SB532 revises county zoning laws to allow for accessory dwelling units on single-family lots.

Montana SB532 revises county zoning laws to allow for accessory dwelling units on single-family lots. Counties must allow at least one accessory dwelling unit by right, which can be attached, detached, or internal to the main dwelling. Counties cannot impose more restrictive regulations on accessory units than on the main dwelling, such as higher building heights or larger lot sizes. Counties may charge a fee for reviewing applications to create accessory dwelling units, up to $250 per unit, but cannot require additional parking or fees in lieu of parking.

Included in complete analysis

  • Overview
  • Core Provisions
  • Implementation
  • Impact
  • Legal Framework
  • Critical Issues

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Sponsors

0
1
R
Democratic CaucusRepublican Caucus

Roll Call Votes

47 Yea

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2 Nay

DD

1 Absent

R

Calendar

Apr 15, 2025

3:00 PM

House Local Government Hearing

Mar 31, 2025

3:00 PM

Senate Local Government Hearing

History

May 16, 2025

Senate

Chapter Number Assigned

May 12, 2025

Senate

(S) Signed by Governor

May 5, 2025

House

(H) Signed by Speaker