

ADUs are allowed in CarmelTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Carmel, IN
Is your property eligible for an ADU?
# of Properties
36,157
Owner-occupied
82%
Zoning districts
28
Avg Home Value
$650,356
Median Lot Size
0.34 acres
Avg Income
$164,617
Residential Types:
36,157 housing units
Single Family
82%
2-3 Family
1%
Apts (4+ units)
1%
Condos
9%
Other
7%
Zoning Districts:
38,333 parcels · 28 districts
S-1
34%(13,114)
R-1
17%(6,372)
PUD
16%(6,229)
S-2
13%(4,843)
Other
20%(7,775)
ADU Rules
What can you build in Carmel, IN?
Carmel, 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
Rental Restrictions
- –Short-term rentals allowed only with a Special Exception and 275+ days occupancy; otherwise STR not permitted. Long-term rentals (≥30 days) have no stated restrictions.
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.
Hamilton County