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ADUs are allowed in Maplewood Township
Types:DetachedInternal

Accessory Dwelling Unit (ADU) Rules for Maplewood Township, NJ

Is your property eligible for an ADU?

# of Properties
472
Owner-occupied
21%
Zoning districts
34
Avg Home Value
$1,642,214
Median Lot Size
0.17 acres
Avg Income
$174,473
Residential Types:
472 housing units
Single Family
16%
2-3 Family
11%
Apts (4+ units)
58%
Condos
15%
Zoning Districts:
7,477 parcels · 34 districts
R-1-5
40%(2,994)
R-1-4
18%(1,342)
R-1-7
16%(1,206)
R-2-4
14%(1,018)
Other
12%(917)

ADU Rules

What can you build in Maplewood Township, NJ?

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

Interior / Attached ADU Size Limits

  • Maximum size of 800 sq ft
  • Maximum size of 40% of the principal dwelling’s living area

Detached ADU Size Limits

  • Maximum size is the lesser of 40% of the principal dwelling’s living area or 800 sq ft (in R-1-4, R-1-5, R-1-7, R-2-4).

Max Units

  • 1 ADU per lot (single-family detached). ADUs not permitted on duplex or multifamily lots.

Owner Occupancy

  • Owner must reside in either the principal dwelling or ADU

Parking

  • 1 space per dwelling unit; no ADU-specific parking standard; RSIS applies; up to 20% waiver after a public hearing; spaces must be on the same lot and not in the yard between street and principal building (front-yard/paving limits).

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.

Essex County

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