Minnetonka, MN Accessory Structures: Garage Conversions (2026)
Garage conversion rules in Minnetonka, MN, sometimes called garage-to-ADU or accessory living unit conversions, govern permits, ceiling height, egress, and parking replacement.
Key Facts
- Replacement garage test
- Room for a 24-foot by 24-foot garage without variance
- Plan required
- Detailed plan showing adequate vehicular parking on the site
- Detached garage alternative
- Principal structure already has a 24 by 24 foot attached garage
- Detached ADU setback
- Equal to its code-defined height, not less than 15 feet
- Bedrooms
- Maximum of two in a detached ADU
- Citation
- Minnetonka City Code § 300.16, subd. 3(d)(2)
Summary
In the City of Minnetonka, Minnesota, garage space can be converted into an accessory dwelling unit only if the lot keeps room for a 24-foot by 24-foot garage without a variance and a detailed plan shows adequate vehicular parking. Minnetonka City Code § 300.16, subd. 3(d)(2) sets separate tests for attached and detached garages.
c. Attached ADUs: ... 2. May be created through the conversion of living space or attached garage space. However, the garage space may be converted only if (1) space is available on the property for construction of a 24-foot by 24-foot garage without variance; and (2) the applicant submits a detailed plan demonstrating adequate vehicluar parking exists on the site. ... d. Detached ADUs: ... 2. May be created through the conversion of detached garage space only if either: (1) the principal structure includes an attached garage with minimum dimensions of 24 feet by 24 feet; or (2) space is available on the property for construction of an attached or detached 24-foot by 24-foot garage without variance, and the applicant submits a detailed plan that demonstrates adequate vehicular parking exists on the site.
Full Breakdown
Minnetonka City Code § 300.16, subd. 3(d)(2) treats garage conversion as one way to create an accessory dwelling unit, and it sets conditions that protect parking. For an attached ADU, paragraph c.2 allows creation through the conversion of living space or attached garage space. The garage space can be converted only if space is available on the property for construction of a 24-foot by 24-foot garage without variance, and the applicant submits a detailed plan demonstrating adequate vehicular parking on the site.
For a detached ADU, paragraph d.2 allows conversion of detached garage space only if one of two tests is met. Either the principal structure already includes an attached garage with minimum dimensions of 24 feet by 24 feet, or space is available on the property for construction of an attached or detached 24-foot by 24-foot garage without variance, and the applicant submits a detailed plan that demonstrates adequate vehicular parking exists on the site.
The conversion also has to satisfy the rest of the ADU standards. ADUs are allowed only on R-1, R-1A and R-2 properties, and the R-1 and R-2 sections list them as conditional uses, so the City Council must find the standards in § 300.16 are met. Off-street parking must remain adequate for both units, with no more than four vehicles parked or stored outside. An attached ADU must keep the single-family appearance of the principal dwelling from off-site views, and its maximum height and minimum setbacks follow the principal structure rules for the zoning district. A detached ADU must maintain the residential character of the lot, stay behind the rear building line of the principal dwelling, be set back from side and rear lines a distance equal to its code-defined height but not less than 15 feet, contain a maximum of two bedrooms, and sit on a permanent foundation with no wheels. Every ADU must meet building, housing, electrical, plumbing and mechanical codes and be registered with the Minnetonka police and fire departments before occupancy.
Violations & Fines
Converting a garage into living space outside the ADU conditions in § 300.16, subd. 3(d)(2) violates the Minnetonka zoning code, as does occupying a converted ADU before police and fire registration. Under Minnetonka City Code § 1310.010, a violation is a misdemeanor punished under state law unless the code states another punishment, and each calendar day is a separate offense.
Frequently Asked Questions
Can I convert my attached garage in Minnetonka?
What are the rules for converting a detached garage in Minnetonka?
Does a converted garage ADU have to match the house?
Do I need to tell the city before moving into a converted garage unit?
Sources & Official References
Other rules in Minnetonka
Compare Minnetonka to another location·View the Minnesota accessory structures overview
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Garage Conversions in Nearby Cities
How other cities in Hennepin County handle garage conversions.