ADUs are allowed in Bernardsville BoroughTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Bernardsville Borough, NJ
Is your property eligible for an ADU?
# of Properties
2,793
Owner-occupied
77%
Zoning districts
20
Avg Home Value
$922,327
Median Lot Size
0.50 acres
Avg Income
$221,042
Residential Types:
2,793 housing units
Single Family
4%
2-3 Family
89%
Apts (4+ units)
5%
Condos
2%
Zoning Districts:
3,053 parcels · 20 districts
R-4
21%(655)
R-2
17%(514)
R-5
15%(466)
R-1
13%(394)
Other
34%(1,024)
ADU Rules
What can you build in Bernardsville Borough, NJ?
Bernardsville Borough, NJ follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Interior / Attached ADU Size Limits
- –Maximum internal or attached ADU size of 1,500 sq ft
Detached ADU Size Limits
- –Maximum living area of 1,500 sq ft for a detached accessory dwelling unit.
Max Units
- –1 accessory apartment per single-family detached dwelling
- –1 attached accessory dwelling unit per lot
- –1 detached accessory dwelling unit per lot
Owner Occupancy
- –Owner-occupancy not required for ADUs
Parking
- –2 spaces per dwelling unit (ADU treated as a dwelling unit); garages may count for up to 50% of the requirement; EVSE credits count as two spaces; reductions may be allowed by Planning Board (not to exceed 10% total).
Rental Restrictions
- –Renting is prohibited for both detached and attached ADUs; no rent is paid; renting allowed only with owner approval under the Borough's Accessory Apartment Program.
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
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.
Somerset County
Bedminster TownshipBernards TownshipBound Brook BoroughBranchburg TownshipBridgewater TownshipFar Hills BoroughFranklin Township (Somerset)Green Brook TownshipHillsborough TownshipManville BoroughMontgomery TownshipNorth Plainfield BoroughPeapack And Gladstone BoroughRaritan Township (Somerset)Rocky Hill BoroughSomerville BoroughSouth Bound Brook BoroughWarren TownshipWatchung Borough