

ADUs are allowed in St Clair TownshipTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for St Clair Township, MI
Is your property eligible for an ADU?
# of Parcels
3,728
Zoning districts
20
Avg Parcel Value
$168,980
Median Parcel Size
2.51 acres
Zoning Districts:
3,617 parcels · 20 districts
RU
55%(1,976)
RS-1
30%(1,083)
RM
6%(226)
MH
3%(100)
Other
6%(232)
ADU Rules
What can you build in St Clair Township, MI?
St Clair Township, MI 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: Not permitted
Rental Restrictions
- –Detached ADU: renting effectively prohibited; rental allowed only with variance; if allowed, must be weekly or longer (no <1 week).
- –Internal/Attached ADU: rentals must be weekly or longer; no short-term (<1 week).
- –Bed & Breakfast: transient stays limited to 14 consecutive days and 30 days/year per occupant; no separate cooking facilities.
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 Michigan municipalities
Rules change at the town line. Check the municipality your property is actually in.
St. Clair County