ADUs are allowed in Hamilton Township (Mercer)Types:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Hamilton Township (Mercer), NJ
Is your property eligible for an ADU?
# of Properties
32,640
Owner-occupied
83%
Zoning districts
32
Avg Home Value
$225,200
Median Lot Size
0.17 acres
Avg Income
$111,906
Residential Types:
32,640 housing units
2-3 Family
94%
Other
6%
Zoning Districts:
35,162 parcels · 32 districts
R10
28%(10,004)
R7
26%(8,996)
R5
15%(5,223)
R15
10%(3,456)
Other
21%(7,483)
ADU Rules
What can you build in Hamilton Township (Mercer), NJ?
Hamilton Township (Mercer), NJ 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: Conditional Use Permit
Parking
- –No ADU-specific min/max; general tables require 2 spaces per dwelling unit for similar dwellings; EV charging spaces can count toward minimums (as at least 2 spaces) with up to 10% reduction.
Rental Restrictions
- –Deed-restricted (affordable) ADUs: rent limited to income-eligible households; 30-year control period; written lease required.\nRents capped with limited annual increases; affordability controls persist despite sublease.
ADU State Law
What can you build in New Jersey?
- –New Jersey does not have a statewide ADU mandate; ADU rules are set by individual municipalities.
- –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
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 New Jersey municipalities
Rules change at the town line. Check the municipality your property is actually in.
Mercer County