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HB 5585

Land use: zoning and growth management; zoning restrictions related to accessory dwelling units and mobile homes; modify. Amends sec. 102 of 2006 PA 110 (MCL 125.3102) & adds secs. 207a & 516.

2025-2026 Regular Session Introduced by Joey Andrews and 26 co-sponsors

Michigan bill restricts local zoning bans on accessory dwelling units and mobile homes to increase housing supply and affordability statewide.

Rep. Sharon MacDonell removed as cosponsor
#landuse:zoningandgrowthmanagement
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WeVote Research Nonpartisan
Bill Summary · HB 5585

Legislative bill overview

HB 5585 modifies Michigan's zoning and growth management laws to remove or restrict local zoning barriers against accessory dwelling units (ADUs) and mobile homes. The bill amends the Michigan Zoning Enabling Act to prevent municipalities from using zoning ordinances to prohibit these housing types, while adding new sections to establish statewide standards for their regulation.

Why is this important

Housing affordability and availability are major challenges in Michigan, particularly in urban and suburban areas. ADUs and mobile homes represent lower-cost housing options that can increase supply on existing residential lots. By limiting local zoning restrictions, the bill aims to enable more diverse housing options while potentially reducing development barriers that increase housing costs.

Potential points of contention

  • Local control vs. state mandate: Municipalities have historically controlled zoning decisions; this bill restricts that authority, raising concerns from communities wanting to preserve neighborhood character and control growth
  • Property value concerns: Some homeowners and communities worry that allowing ADUs and mobile homes in single-family zones could impact property values or neighborhood composition
  • Implementation ambiguity: The bill's specific restrictions on local zoning authority aren't detailed in this summary, leaving questions about what municipal regulations remain permissible versus prohibited

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

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