Can I Build ADU in Minneapolis, MN? (2026)
Find out if you can build a adu in Minneapolis, MN. Rules, permit requirements, costs, and next steps.
Yes, ADUs are allowed in Minneapolis, MN. California state law ensures by-right approval.
An Accessory Dwelling Unit (ADU) is a secondary housing unit on a residential lot — also called a granny flat, in-law suite, or backyard cottage. In Minneapolis, MN, ADUs are permitted by right under state law, making them one of the most accessible ways to add housing on your property. ADUs can be detached, attached to the main home, or created by converting an existing garage or accessory structure.
ADU Rules in Minneapolis
ADU Rules in Minneapolis: Detached ADU max size: 1000 sq ft. Attached ADU max size: No greater than primary dwelling floor area. Setbacks: 5 ft side, 15 ft rear. Owner-occupancy: No owner-occupancy requirement for ADUs in Minneapolis. Property owner does not need to reside on site..
Costs & Fees
ADU permits in Minneapolis: Total estimated permit cost: $1,000-$5,000 total permit fees for typical ADU. Contact the Minneapolis Regulatory Services — Building Inspections for current fee schedule.
Timeline
Minneapolis Community Planning and Economic Development (CPED) processes building permits. Typical plan review: 4-8 weeks. Over-the-counter permits available for simple alterations. Construction typically 3-9 months.
Next Steps
Next steps for building an ADU in Minneapolis: 1. Review full ADU rules including size limits, setbacks, and parking. 2. Apply for an ADU permit through the Minneapolis Regulatory Services — Building Inspections at https://lims.minneapolismn.gov/. 3. Hire a licensed contractor familiar with MN ADU requirements.
Minneapolis Regulatory Services — Building Inspections
Phone: (612) 673-2010
Website: https://www.minneapolismn.gov/government/departments/regulatory-services/
Online Permits: https://lims.minneapolismn.gov/
Frequently Asked Questions
Can I build a triplex in Minneapolis?
Yes. Minneapolis made national history in 2020 by becoming the first major US city to eliminate single-family-only zoning. Under the Minneapolis 2040 Comprehensive Plan, up to 3 units (triplexes) are allowed by-right on all residential lots citywide, including former single-family zones. No special permits or variances are needed — triplexes are permitted as-of-right if the design meets zoning code standards.
Can I build an ADU in Minneapolis?
Yes. ADUs are allowed in Minneapolis residential zones. Under Minneapolis 2040, up to 3 total units are permitted on all residential lots. An existing single-family home can add an ADU (making it a duplex) or two additional units (making it a triplex). No owner-occupancy requirement applies. Permits are processed by Minneapolis Regulatory Services.
Does Minneapolis require a permit for short-term rentals?
Yes. Minneapolis requires a Short-Term Rental License ($100/year) for all Airbnb-style rentals. Properties must meet housing and fire codes. Unlike some cities, Minneapolis does not require the property to be the host's primary residence — non-owner-occupied STRs are allowed with a license.
What is the front yard setback in an R1 zone in Minneapolis?
The standard front yard setback in an R1 zone in Minneapolis is 20 feet from the front property line. Side yard setbacks are 5 feet each side, and rear yard setbacks are 25 feet. Minneapolis 2040 allows up to 3 units on R1 lots, but all units must comply with these setback standards.
Are solar panels required on new homes in Minneapolis?
No. Minnesota does not have a statewide solar mandate for residential construction. Solar is voluntary in Minneapolis. However, Xcel Energy (the primary utility serving Minneapolis) offers net metering and solar incentive programs for homeowners who do install solar panels. HOAs are limited in their ability to prohibit solar installations under Minnesota law.
Source: Minneapolis Regulatory Services — Building Inspections — Building Regulations. Last verified April 5, 2026. View source