ADUs are allowed in Hanover TownshipTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Hanover Township, NJ
Is your property eligible for an ADU?
# of Properties
5,516
Owner-occupied
87%
Zoning districts
42
Avg Home Value
$620,441
Median Lot Size
0.36 acres
Avg Income
$167,819
Residential Types:
5,516 housing units
Other
100%
Zoning Districts:
5,880 parcels · 42 districts
R-15
32%(1,897)
R-M
14%(840)
R-10
12%(683)
R-21
11%(621)
Other
31%(1,839)
ADU Rules
What can you build in Hanover Township, NJ?
Hanover 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 is the lesser of 1,000 sq ft or the primary dwelling’s habitable floor area
Detached ADU Size Limits
- –Maximum ADU size is the lesser of 1,000 sq ft or the primary dwelling’s habitable floor area
Max Units
- –Single-family detached: 1 ADU per lot. Duplex/multifamily principal structures: not permitted.
Owner Occupancy
- –No owner-occupancy requirement
Parking
- –1 space per efficiency or 1-bedroom ADU; 2+ BRs follow NJ RSIS (no specific min). Exceptions: at least one off-street space for the efficiency/1-bedroom; spaces may be reduced/deferred by the reviewing agency; garage space for each new dwelling unit unless waived (in RM zones or affordable-only developments).
Rental Restrictions
- –ADUs must be rented as affordable rental units; occupancy limited to income-qualified tenants under affordability controls.
- –Deed-restricted affordable for 10 years; existing unauthorized units must be vacant or occupied by an unrelated income-qualified household with affirmative marketing on vacancy.
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.
Morris County
BoontonChatham TownshipChester BoroughDenville TownshipDoverEast Hanover TownshipFlorham Park BoroughHarding TownshipJefferson TownshipKinnelon BoroughLincoln Park BoroughLong Hill TownshipMadison BoroughMendham BoroughMine Hill TownshipMontville TownshipMorris Plains BoroughMorristownMorris TownshipMountain Lakes BoroughMount Arlington BoroughMount Olive TownshipNetcong BoroughParsippany Troy Hills Township