

ADUs are allowed in MerrillvilleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Merrillville, IN
Is your property eligible for an ADU?
# of Properties
12,217
Owner-occupied
80%
Zoning districts
18
Avg Home Value
$211,696
Median Lot Size
0.25 acres
Avg Income
$71,262
Residential Types:
12,217 housing units
Single Family
87%
2-3 Family
1%
Apts (4+ units)
1%
Condos
3%
Other
8%
Zoning Districts:
14,199 parcels · 18 districts
R2
63%(9,012)
R3
8%(1,119)
R1
7%(1,009)
R5
7%(934)
Other
15%(2,125)
ADU Rules
What can you build in Merrillville, IN?
Merrillville, IN 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: Conditional Use Permit
Owner Occupancy
- –Owner-occupancy not required.
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.
Lake County