ADU rules for Webster Groves
Accessory Dwelling Unit (ADU) Rules for Webster Groves, MO
Is your property eligible for an ADU?
# of Properties
8,365
Owner-occupied
89%
Zoning districts
16
Avg Home Value
$499,351
Median Lot Size
0.22 acres
Avg Income
$138,270
Residential Types:
8,420 housing units
Single Family
96%
2-3 Family
1%
Apts (4+ units)
4%
Zoning Districts:
9,092 parcels · 16 districts
A4
64%(5,849)
A3
14%(1,278)
A2
8%(714)
A1
7%(592)
Other
7%(659)
ADU Rules
What can you build in Webster Groves, MO?
Webster Groves, 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
Owner Occupancy
- –ADU occupancy limited to on-site family or domestic staff
Rental Restrictions
- –Detached ADU rental prohibited; no accessory structure shall be used as rental property (only family or domestic employees, max two occupants).
- –STR for detached unit not allowed; STR rules permit only rooms in owner-occupied residence (max 2 rooms, owner on-site, 14 consecutive days, 30 days/year).
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