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Bill

LC 705

Revise county zoning to allow accessory dwelling units

2025 Regular Session

Montana bill revises county zoning to permit accessory dwelling units, increasing residential housing options while potentially limiting local control over development standards.

(LC) Draft Delivered to Requester
#counties(seealso:localgovernment) #environmentalprotection #housing #localgovernment(seealso:citysubjects;countysubjects) #planninganddevelopment #revenue #local #state
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Bill Summary · LC 705

Legislative bill overview

Bill LC 705 would revise Montana county zoning regulations to permit accessory dwelling units (ADUs)—secondary residential units on single-family properties, such as garage apartments or backyard cottages. The bill appears designed to increase housing flexibility and supply at the local level by removing categorical zoning prohibitions against these units.

Why is this important

Montana faces significant housing affordability challenges and supply shortages in many communities, and ADUs offer a way to add housing density without large-scale development. This policy could help homeowners generate rental income, enable multi-generational living arrangements, and provide more affordable housing options while maintaining neighborhood character.

Potential points of contention

  • Local control vs. state mandate: Counties may resist state-level requirements that override local zoning preferences, viewing this as an infringement on municipal authority
  • Neighborhood character concerns: Some residents worry ADUs could increase traffic, parking problems, and strain on infrastructure in single-family residential areas
  • Implementation details: The bill's specific requirements (size limits, owner-occupancy rules, parking mandates, setback distances) will significantly impact feasibility and could create compliance burdens for property owners

Compiled from official sources — confirm details with the bill’s official record.

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