ADUs are allowed in KirkwoodTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Kirkwood, MO
Is your property eligible for an ADU?
# of Properties
11,154
Owner-occupied
83%
Zoning districts
25
Avg Home Value
$534,272
Median Lot Size
0.26 acres
Avg Income
$131,383
Residential Types:
11,190 housing units
Single Family
85%
Apts (4+ units)
15%
Zoning Districts:
12,218 parcels · 25 districts
R-4
40%(4,942)
R-3
33%(4,048)
R-5
11%(1,373)
R-1
7%(906)
Other
8%(949)
ADU Rules
What can you build in Kirkwood, MO?
Kirkwood, MO follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Special Permit
- –Detached ADU: Special Permit
Interior / Attached ADU Size Limits
- –Maximum size of 750 sq ft for an internal or attached ADU
Detached ADU Size Limits
- –Maximum size of 750 sq ft of floor area for a detached accessory dwelling unit.
Max Units
- –1 ADU per lot for single-family (R-1–R-4).
- –0 ADUs per lot for duplex/two-family, multifamily, and other non-single-family lots.
Owner Occupancy
- –Owner must reside in either the main house or ADU
Parking
- –1 off-street space per ADU; in addition to principal-dwelling parking; no maximum; must be off-street with direct, drivable access to a street
Rental Restrictions
- –Short-term rentals of an ADU are not permitted.
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