ADUs are allowed in MahtomediTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Mahtomedi, MN
Is your property eligible for an ADU?
# of Properties
3,272
Owner-occupied
90%
Zoning districts
24
Avg Home Value
$537,607
Median Lot Size
0.31 acres
Avg Income
$133,005
Residential Types:
3,272 housing units
Single Family
91%
2-3 Family
2%
Apts (4+ units)
2%
Other
6%
Zoning Districts:
3,317 parcels · 24 districts
R1-D
42%(1,378)
R1-E
24%(792)
R1-C
9%(299)
R1-B
7%(244)
Other
18%(604)
ADU Rules
What can you build in Mahtomedi, MN?
Mahtomedi, MN follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Interior / Attached ADU Size Limits
- –Maximum internal ADU size is strictly less than 960 sq ft (excluding utility rooms and garages).
- –Internal ADU may be no more than 33% of the single-family home’s four-season living area (excluding the ADU).
Detached ADU Size Limits
- –Maximum ADU floor area must be less than 960 sq ft (exclusive of utility rooms and garages)
- –Maximum ADU floor area is 33% of the associated single-family home’s four-season living area (excluding the ADU)
- –Maximum ADU floor area limited by remaining total accessory-building lot coverage: 750 sq ft on lots ≤10,400 sq ft; otherwise the lesser of 1,250 sq ft or 7.25% of lot area, and no more than 80% of the principal building’s lot coverage (up to 100% if specifically allowed by CUP), minus existing accessory coverage
Owner Occupancy
- –No owner-occupancy requirement.
Parking
- –Min: 1 off-street space per ADU on the property; the lot must meet the 2-space single-family standard. Max: none specified. Exceptions: ADUs not permitted if the site doesn’t meet the 2-space standard; at least one additional off-street space is required on the property; parking must follow Subd. 10.3; Council may reduce parking for low automobile ownership.
Rental Restrictions
- –Only one rental license per residential site; only one unit (ADU or primary dwelling) may be rented at a time.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other Minnesota municipalities
Rules change at the town line. Check the municipality your property is actually in.
Washington County