

ADUs are allowed in MarionTypes:Detached
Types:Detached
Accessory Dwelling Unit (ADU) Rules for Marion, IN
Is your property eligible for an ADU?
# of Properties
9,976
Owner-occupied
64%
Zoning districts
24
Avg Home Value
$97,595
Median Lot Size
0.18 acres
Avg Income
$48,666
Residential Types:
10,040 housing units
Single Family
86%
2-3 Family
5%
Apts (4+ units)
6%
Condos
3%
Zoning Districts:
14,012 parcels · 24 districts
R3
38%(5,388)
R1
18%(2,583)
R2
16%(2,225)
R4
6%(840)
Other
21%(2,976)
ADU Rules
What can you build in Marion, IN?
Marion, IN 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: By Right
Detached ADU Size Limits
- –Detached accessory dwelling units are not permitted; maximum allowed area is 0 sq ft.
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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Is your property eligible for an ADU?
ADU rules in other Indiana municipalities
Rules change at the town line. Check the municipality your property is actually in.
Grant County