Minnesota ADU Laws & Permit Guide (2026)
Minnesota passed statewide ADU legislation in 2023 as part of a broad housing package, requiring cities to allow ADUs on single-family lots. Minneapolis has been a national leader in ADU-friendly policy since 2019.
Minnesota ADU At a Glance
Permit Timeline
60–120 days
Average Build Cost
$100,000 – $250,000
Maximum Size
Varies by city (Minneapolis: up to 1,500 sq ft)
Owner-Occupancy Required
Not required under 2023 state law
Impact Fees
Varies by city
Setbacks
Varies; Minneapolis allows reduced setbacks in many zones
Recent Law Changes in Minnesota
Comprehensive housing package that requires Minnesota cities with populations over 1,000 to allow ADUs on single-family lots as a matter of right. Prohibits owner-occupancy requirements and limits local restrictions on ADU size and setbacks.
Minneapolis eliminated single-family zoning citywide and explicitly allowed ADUs on all residential lots, making it one of the first major US cities to do so.
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Browse Minnesota Contractors →Frequently Asked Questions — ADUs in Minnesota
Can I build an ADU anywhere in Minnesota?
In most of Minnesota, yes. The 2023 housing omnibus bill requires cities with over 1,000 residents to allow ADUs on single-family lots by right. Minneapolis has allowed ADUs on all residential lots since 2019.
How much does it cost to build an ADU in Minnesota?
Minnesota ADU costs typically range from $100,000 to $250,000 for a detached unit. Minneapolis and St. Paul tend to run higher. Garage conversions — common in Minnesota given the prevalence of attached and detached garages — can cost $40,000–$100,000.
Do I need to live on my property to build an ADU in Minnesota?
No. The 2023 state law prohibits municipalities from requiring owner-occupancy for ADU properties.
How long does ADU permitting take in Minnesota?
Minnesota ADU permitting typically takes 60–120 days. Minneapolis has invested in streamlining the process and offers pre-approved plan sets through its ADU Design Initiative, which can significantly reduce timelines.
Can I convert my attached garage to an ADU in Minnesota?
Yes. Garage conversions are one of the most popular ADU types in Minnesota due to the prevalence of attached garages. This is often the most cost-effective path, typically ranging from $40,000 to $100,000 depending on size and finish level.
Sources
- MN Department of Labor & Industry ↗
- City of Minneapolis — ADU Resources ↗
- MN Legislature — 2023 Housing Package ↗
Disclaimer: The information on this page is provided for general informational purposes only and does not constitute legal, financial, or construction advice. ADU regulations change frequently — always verify current rules with your local planning department and consult a licensed professional before making decisions. ADUHomeResource.com is not liable for any errors, omissions, or outcomes resulting from use of this information.