ADUs are allowed in Alexandria TownshipTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Alexandria Township, NJ
Is your property eligible for an ADU?
# of Properties
1,687
Owner-occupied
79%
Zoning districts
8
Avg Home Value
$356,118
Median Lot Size
1.94 acres
Avg Income
$175,591
Residential Types:
1,687 housing units
Condos
4%
Other
96%
Zoning Districts:
2,161 parcels · 8 districts
AR
88%(1,901)
VR
6%(123)
VC
2%(40)
IC
1%(29)
Other
3%(68)
ADU Rules
What can you build in Alexandria Township, NJ?
Alexandria 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
Max Units
- –H-2a: 1 per lot (on 40+ acre farm lots).
- –H-2b: 1 per lot; township cap of 3 total through July 2025.
- –H-2c: 1 per lot; on lots containing H-2 or H-2b, minimum 6 acres and up to 2 total ADUs (one ECHO + one H-2/H-2b) on such lots.
Owner Occupancy
- –Owner must reside on the property with the primary dwelling
Parking
- –1 space/ADU; affordable ADUs must meet RSIS (Garden Apartment) for both principal and accessory units; on-site parking required for affordable ADUs and any added spaces must be screened.
Rental Restrictions
- –Farm ADU: no general or short-term rentals; occupancy limited to domestic servants, caretakers, farm labor or family; ECHO unit: limited to two occupants (including owner-relative age 60+) and not a general rental; Affordable Accessory Apartment: rented only to low-/moderate-income households for 10 years with rents regulated by deed restriction.
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.
Hunterdon County
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