

ADUs are allowed in Lopatcong TownshipTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Lopatcong Township, NJ
Is your property eligible for an ADU?
# of Properties
250
Owner-occupied
30%
Zoning districts
27
Avg Home Value
$1,159,005
Median Lot Size
0.42 acres
Avg Income
$79,428
Residential Types:
253 housing units
Single Family
48%
Apts (4+ units)
51%
Condos
1%
Zoning Districts:
3,567 parcels · 27 districts
R-75
23%(819)
R-120
21%(757)
R-MF
12%(431)
AH
11%(390)
Other
33%(1,170)
ADU Rules
What can you build in Lopatcong Township, NJ?
Lopatcong Township, NJ follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of an in-home accessory apartment cannot exceed the gross floor area of the existing principal dwelling.
Detached ADU Size Limits
- –Maximum detached accessory dwelling unit size equal to the principal dwelling’s gross floor area.
Parking
- –No ADU-specific minimum or maximum; show required parking on the site plan and follow general parking regulations; general schedule lists 1 space for single-family dwellings, applicability to ADUs not specified.
Rental Restrictions
- –Must be rented only to income-qualified households for at least 10 years; deed restriction on rental/sale.
- –Only certified households may be offered; rents governed by the affordable housing program.
- –Written leases required; no extra fees beyond approved rent without written approval; copies of leases must be provided to the admin agent.
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