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ADUs are allowed in Lawrence Township (Mercer)
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Accessory Dwelling Unit (ADU) Rules for Lawrence Township (Mercer), NJ

Is your property eligible for an ADU?

# of Properties
12,702
Owner-occupied
81%
Zoning districts
43
Avg Home Value
$288,272
Median Lot Size
0.12 acres
Avg Income
$133,466
Residential Types:
12,702 housing units
2-3 Family
90%
Other
10%
Zoning Districts:
13,551 parcels · 43 districts
R-4
28%(3,836)
R-2B
10%(1,397)
R-3
10%(1,313)
AT
9%(1,208)
Other
43%(5,797)

ADU Rules

What can you build in Lawrence Township (Mercer), NJ?

Lawrence Township (Mercer), NJ follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Max Units

  • 1 accessory apartment per lot (single-family detached)
  • Other principal structures: none specified

Owner Occupancy

  • Not required; ADU occupants must be owner's family or caretaker

Parking

  • 1 space/ADU on-site; no max stated; exceptions: none specified

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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Is your property eligible for an ADU?

ADU rules in other New Jersey municipalities

Rules change at the town line. Check the municipality your property is actually in.

Mercer County

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