ADUs are allowed in Mansfield Township (Warren)Types:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Mansfield Township (Warren), NJ
Is your property eligible for an ADU?
# of Properties
692
Owner-occupied
5%
Zoning districts
23
Avg Home Value
$260,750
Median Lot Size
0.17 acres
Avg Income
$85,623
Residential Types:
696 housing units
Single Family
91%
Apts (4+ units)
8%
Condos
1%
Zoning Districts:
3,609 parcels · 23 districts
R-2
39%(1,397)
A
24%(854)
R-1
13%(486)
I
13%(468)
Other
11%(404)
ADU Rules
What can you build in Mansfield Township (Warren), NJ?
Mansfield Township (Warren), 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: Not permitted
Interior / Attached ADU Size Limits
- –Maximum size is the lesser of a percentage of the home’s total floor area (including basement) or a fixed cap: <3,000 sq ft home = 40% or 1,000 sq ft; 3,000–<5,000 sq ft = 30% or 1,200 sq ft; ≥5,000 sq ft = 20% or 1,500 sq ft
Max Units
- –Single-family detached: 1 internal ADU/lot
- –Detached ADU: 0 (prohibited)
Owner Occupancy
- –Lot owner must occupy the primary unit.
Parking
- –2 spaces per ADU; no max; exceptions: adequate off-street parking for both principal and accessory uses and required turnaround areas to prevent backing into roadways
Rental Restrictions
- –Internal/attached ADU: renting prohibited; occupants must be familial and shall not pay rent; no boarders; cannot be sublet or rented for any period (including short-term). Detached ADU: not permitted; rental not applicable.
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.
Warren County