ADU rules for Madison Borough
Accessory Dwelling Unit (ADU) Rules for Madison Borough, NJ
Is your property eligible for an ADU?
# of Properties
4,618
Owner-occupied
82%
Zoning districts
20
Avg Home Value
$790,508
Median Lot Size
0.24 acres
Avg Income
$170,871
Residential Types:
4,618 housing units
Apts (4+ units)
1%
Other
99%
Zoning Districts:
4,838 parcels · 20 districts
R-3
50%(2,400)
R-2
17%(821)
R-4
10%(490)
R-6
7%(318)
Other
17%(809)
ADU Rules
What can you build in Madison Borough, NJ?
Madison Borough, NJ follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
Max Units
- –Detached ADU: 0 per lot
Parking
- –No ADU-specific parking requirements; parking is governed by NJRSIS (N.J.A.C. 5:21); detached ADUs not permitted (per §195-30.5).
Rental Restrictions
- –No accessory building shall be used for human habitation.
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
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