ADU rules for St Peters
Accessory Dwelling Unit (ADU) Rules for St Peters, MO
Is your property eligible for an ADU?
# of Properties
21,895
Owner-occupied
83%
Zoning districts
42
Avg Home Value
$308,742
Median Lot Size
0.20 acres
Avg Income
$96,950
Residential Types:
21,895 housing units
Single Family
75%
2-3 Family
2%
Other
23%
Zoning Districts:
24,245 parcels · 42 districts
R-1
52%(12,526)
PUD
30%(7,162)
R-3(A
8%(1,873)
C-3
2%(555)
Other
9%(2,129)
ADU Rules
What can you build in St Peters, MO?
St Peters, MO follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
Max Units
- –R-1/R-1A/R-2 Detached ADU: 0 per lot
Rental Restrictions
- –Detached ADU not permitted as a dwelling in R-1/R-2; cannot be rented.
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 Missouri municipalities
Rules change at the town line. Check the municipality your property is actually in.
St. Charles County