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ADUs are allowed in Knowlton Township
Types:DetachedInternal

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

Is your property eligible for an ADU?

# of Properties
205
Owner-occupied
10%
Zoning districts
9
Avg Home Value
$123,035
Median Lot Size
1.72 acres
Avg Income
$96,038
Residential Types:
207 housing units
Single Family
72%
Apts (4+ units)
27%
Condos
1%
Zoning Districts:
1,684 parcels · 9 districts
FPD
73%(1,234)
VR
9%(152)
AR-1
7%(118)
C-1
5%(86)
Other
6%(94)

ADU Rules

What can you build in Knowlton Township, NJ?

Knowlton 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 850 sq ft
  • Maximum size of 25% of the principal dwelling’s gross floor area
  • Maximum size of 35% of the principal dwelling’s gross floor area
  • Maximum size not to exceed the principal dwelling’s gross floor area (alternate affordable housing program)

Detached ADU Size Limits

  • Maximum ADU size of 850 sq ft
  • Maximum ADU size of 35% of the principal dwelling’s total floor area

Max Units

  • 1 ADU per single-family lot
  • Duplex: none specified; Multifamily: none specified
  • ADU type (detached/attached/JADU): none specified

Owner Occupancy

  • Owner must reside in the principal dwelling or ADU at all times

Parking

  • 2 spaces/ADU; up to 2 additional spaces may be provided; waiver/reduction possible with land reserved for future spaces; ADU applications must show required parking for both units; added spaces may not alter the property's facade

Rental Restrictions

  • Rents limited to low-/moderate-income households for the affordability period (10 years; 30-year control noted); written lease required; no fees beyond approved rent; deed restrictions run with the land; rents must be affordable and include utilities.

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.

Warren County

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