

ADUs are allowed in Harmony TownshipTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Harmony Township, NJ
Is your property eligible for an ADU?
# of Properties
227
Owner-occupied
19%
Zoning districts
16
Avg Home Value
$94,151
Median Lot Size
0.57 acres
Avg Income
$89,280
Residential Types:
227 housing units
Single Family
84%
Apts (4+ units)
16%
Zoning Districts:
1,688 parcels · 16 districts
AR-300
34%(581)
AR-250
26%(441)
R-150
20%(337)
LI-O/C
4%(61)
Other
16%(268)
ADU Rules
What can you build in Harmony Township, NJ?
Harmony 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: Conditional Use Permit
Detached ADU Size Limits
- –Maximum detached ADU interior area of 750 sq ft.
Owner Occupancy
- –Owner-occupancy not required
Parking
- –ADU parking has no numeric requirement; must follow township parking standards; uses not listed default to 1 space per 200 sq ft; board may waive paved parking if unneeded.
Rental Restrictions
- –ECHO units limited to exclusive occupancy by elderly persons; at least one occupant must be related to the owner, effectively prohibiting renting to unrelated tenants. Attached ADUs must be deed-restricted for affordable housing (10 years, 30 years with rental bonus); if rented, gross rents may not exceed 30% of household income.
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