

ADUs are allowed in Montclair TownshipTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Montclair Township, NJ
Is your property eligible for an ADU?
# of Properties
1,243
Owner-occupied
20%
Zoning districts
38
Avg Home Value
$898,547
Median Lot Size
0.22 acres
Avg Income
$138,281
Residential Types:
1,243 housing units
Single Family
19%
2-3 Family
19%
Apts (4+ units)
49%
Condos
13%
Zoning Districts:
11,165 parcels · 38 districts
R-1(60
23%(2,569)
R-2(60
18%(1,971)
R-1(70
13%(1,400)
R-1(75
7%(829)
Other
39%(4,396)
ADU Rules
What can you build in Montclair Township, NJ?
Montclair 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 40% of the principal building’s habitable area
- –Maximum size of 800 sq ft
Detached ADU Size Limits
- –Maximum detached ADU floor area is the lesser of 40% of the principal home’s habitable area or 800 sq ft.
Max Units
- –1 ADU per lot for one- and two-family lots in R-O, R-O(a), R-1, R-2.
Owner Occupancy
- –Owner must occupy the ADU or the primary dwelling as domicile.
Parking
- –1 off-street parking space per ADU; maximum not specified; no reductions/waivers or transit exemptions stated; applies to ADUs on lots with 1- or 2-family dwellings
Rental Restrictions
- –Minimum rental term of six months required; short-term rentals prohibited.
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.
Essex County
Belleville TownshipBloomfield TownshipCaldwell BoroughCedar Grove TownshipCity Of Orange TownshipEast OrangeEssex Fells BoroughFairfield Township (Essex)Glen Ridge BoroughIrvington TownshipLivingston TownshipMaplewood TownshipMillburn TownshipNewarkNorth Caldwell BoroughNutley TownshipRoseland BoroughSouth Orange VillageVerona TownshipWest Caldwell TownshipWest Orange Township