Montana legislation · 2025 Regular Session
Montana SB532: Revise county zoning to allow accessory dwelling units
Status: Signed into law, May 16, 2025
What the bill says
An act revising county zoning laws to allow for accessory dwelling units; requiring counties to adopt certain regulations in relation to accessory dwelling units; prohibiting certain regulations in relation to accessory dwelling units; allowing a county to charge a fee to review applications to create accessory dwelling units; amending section 76-4-130, mca; and providing a termination date.
From the engrossed text:
AN ACT REVISING COUNTY ZONING LAWS TO ALLOW FOR ACCESSORY DWELLING UNITS; REQUIRING COUNTIES TO ADOPT CERTAIN REGULATIONS IN RELATION TO ACCESSORY DWELLING UNITS; PROHIBITING CERTAIN REGULATIONS IN RELATION TO ACCESSORY DWELLING UNITS; ALLOWING A COUNTY TO CHARGE A FEE TO REVIEW APPLICATIONS TO CREATE ACCESSORY DWELLING UNITS; AMENDING SECTION 76-4-130, MCA; AND PROVIDING A TERMINATION DATE. Section 1. Accessory dwelling units -- regulations -- restrictions. (1) (a) In jurisdictional areas where the board of county commissioners has established zoning regulations under this part, the regulations must allow a minimum of one accessory dwelling unit by right on a lot or parcel that contains a single-family dwelling. (b) An accessory dwelling unit may be attached, detached, or internal to the single-family dwelling on a lot or parcel. (2) A county may not: (a) require that an accessory dwelling unit match the exterior design, roof pitch, or finishing materials of the single-family dwelling; (b) require that the single-family dwelling or the accessory dwelling unit be occupied by the owner; (c) require a familial, marital, or employment relationship between the occupants of the singlefamily dwelling and the occupants of the accessory dwelling unit; (d) assess impact fees on the construction of an accessory dwelling unit; (e) require improvements to public streets as a condition of permitting an accessory dwelling unit, except as …
Sponsors
- Mandeville, Forrest (R, 28) · primary sponsor
Latest actions
- : Chapter Number Assigned
- : (S) Signed by Governor
- : (S) Transmitted to Governor
- : (H) Signed by Speaker
- : (S) Signed by President
- : (S) Returned from Enrolling
- : (S) Sent to Enrolling
- : (S) 3rd Reading House Amendments
- : (S) Scheduled for 3rd Reading
- : (S) 2nd Reading House Amendments
Votes
- Do Pass (April 28, 2025): 47 yea, 2 nay, passed
- Do Pass (April 25, 2025): 44 yea, 4 nay, passed
- Do Concur (April 23, 2025): 75 yea, 24 nay, passed
- Do Concur (April 22, 2025): 76 yea, 24 nay, passed
- Do Pass (April 5, 2025): 41 yea, 7 nay, passed
- Do Pass (April 4, 2025): 37 yea, 11 nay, passed
Subjects: Housing, Environmental Protection, Planning, Revenue, State, Revenue, Local, Counties, Local Government
Common questions
- What is SB532?
- SB532 is a bill in the Montana Legislature (2025 Regular Session): Revise county zoning to allow accessory dwelling units.
- What does SB532 do?
- In its own words: An act revising county zoning laws to allow for accessory dwelling units; requiring counties to adopt certain regulations in relation to accessory dwelling units; prohibiting certain regulations in relation to accessory dwelling units; allowing a county to charge a fee to review applications to create accessory dwelling units; amending section 76-4-130, mca; and providing a termination date.
- What is the status of SB532?
- Signed into law as of May 16, 2025. Latest action: Chapter Number Assigned (May 16, 2025).
- Who sponsored SB532?
- Mandeville, Forrest (R, 28).
- Where is the official record for SB532?
- On the Montana Legislature website: https://bills.legmt.gov/#/laws/bill/2/LC0705
Source: official Montana record. Tracked by Delilah, AI for legislation across all 50 states and Congress.