ADU Rules by City

17 Twin Cities metro cities, 17 different rulebooks

Some cities make it easy. Others require a discretionary permit, or don't allow ADUs at all yet. Find your city below to see exactly where it stands.

17 cities covered Last verified: August 2026
Scores and summaries below are compiled from official city code and city planning department sources for general reference - they are not legal advice. Zoning rules change often, and some cities' ADU status is actively in flux. Always confirm current requirements with the applicable city's planning or building department before designing or applying for permits.

Minneapolis

9/10
1,000 sq ft*
Max detached size
Not required
Owner-occupancy
View rules →

St. Paul

9/10
800 sq ft*
Max detached size
Up to 2
ADUs per lot
View rules →

Bloomington

8/10
1,000 sq ft*
Max detached size
Not required
Owner-occupancy
View rules →

Edina

7/10
1,000 sq ft
Max ADU size
1 unit at a time
Rental limit
View rules →

Burnsville

6/10
50% of home
Max ADU size
Required
Owner-occupancy
View rules →

Plymouth

6/10
700-1,000 sq ft
Max ADU size
Required
Owner-occupancy
View rules →

St. Louis Park

6/10
40% of home
Max attached size
No permit add
Parking
View rules →

Eagan

5/10
Attached only
Detached not allowed
960 sq ft
Max ADU size
View rules →

Blaine

4/10
Attached only
Detached banned 2026
Required
Owner-occupancy
View rules →

Minnetonka

4/10
CUP required
Not by right
$650
Permit fee
View rules →

Apple Valley

2/10
CUP required
Not by right
40,000 sq ft
Min lot size
View rules →

Maple Grove

2/10
Not allowed
No ADU ordinance
-
 
View rules →

Brooklyn Park

2/10
Proposed
Not yet adopted
-
 
View rules →

Coon Rapids

2/10
Not allowed
No ADU ordinance
-
 
View rules →

Woodbury

2/10
Not allowed
Code bans it
-
 
View rules →

Lakeville

2/10
Not allowed
No ADU ordinance
-
 
View rules →

Eden Prairie

1/10
Not allowed
No ADU ordinance
-
 
View rules →

*Figures are summarized for convenience and may vary by lot and unit type. Scores are Twin Cities ADU's own editorial rating of how workable each city's ordinance is for a typical homeowner (permit path, owner-occupancy rules, size limits) - not an official city rating.

Don't see your city move the way you'd hoped?

Whatever your city allows today, we can still help you understand your options and find a builder who knows the local rules.