ADU rules for St Ann
Accessory Dwelling Unit (ADU) Rules for St Ann, MO
Is your property eligible for an ADU?
# of Properties
9
Zoning districts
13
Zoning Districts:
4,969 parcels · 13 districts
R-1
90%(4,476)
R-4
4%(219)
C-2
2%(100)
Municipal
1%(39)
Other
3%(135)
ADU Rules
What can you build in St Ann, MO?
St Ann, 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
- –0 ADUs per lot (R-1, R-2, R-2A, R-3, R-4)
Parking
- –ADUs not permitted; no ADU-specific parking requirements; general residential parking standards apply to other dwellings
Rental Restrictions
- –Detached ADUs: no accessory building shall be used for dwelling purposes, effectively banning rental. Internal/attached ADUs: not authorized in single-family districts, so they could not 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. Louis County