

ADUs are allowed in Maryland HeightsTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Maryland Heights, MO
Is your property eligible for an ADU?
# of Properties
8,364
Owner-occupied
85%
Zoning districts
29
Avg Home Value
$378,807
Median Lot Size
0.19 acres
Avg Income
$92,503
Residential Types:
8,369 housing units
Single Family
85%
Apts (4+ units)
15%
Zoning Districts:
9,971 parcels · 29 districts
R-5
62%(6,181)
R-6
10%(987)
PD-R
7%(687)
M-1
6%(593)
Other
15%(1,523)
ADU Rules
What can you build in Maryland Heights, MO?
Maryland Heights, MO 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
Max Units
- –0 ADUs per lot in single-family districts (R-1 through R-5)
Parking
- –No ADU parking standards; ADUs not permitted in R-1 through R-5; final parking determination by city planner.
Rental Restrictions
- –Detached ADUs prohibited; no rental or short-term rental of detached ADUs. Internal/attached ADUs cannot be rented separately as short-term rentals.
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.
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