ADUs are allowed in IndianapolisTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Indianapolis, IN
Is your property eligible for an ADU?
# of Properties
273,336
Owner-occupied
88%
Zoning districts
78
Avg Home Value
$248,716
Median Lot Size
0.19 acres
Avg Income
$81,871
Residential Types:
273,336 housing units
Single Family
88%
2-3 Family
3%
Other
9%
Zoning Districts:
318,251 parcels · 78 districts
D5
29%(91,430)
D3
14%(44,309)
DP
13%(40,860)
D4
12%(36,895)
Other
33%(104,757)
ADU Rules
What can you build in Indianapolis, IN?
Indianapolis, IN follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum internal or attached ADU size of 720 sq ft
Detached ADU Size Limits
- –Maximum size of 720 sq ft for a detached secondary dwelling unit
Max Units
- –1 secondary dwelling unit per single-family detached lot
Owner Occupancy
- –Owner must occupy either the primary or ADU as permanent residence
Parking
- –1 space/ADU; on-street spaces in front may count toward minimum in Compact Context; tandem parking may be used; no off-street parking required in Mile Square or MU-4
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 Indiana municipalities
Rules change at the town line. Check the municipality your property is actually in.
Marion County
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