What is the minimum lot size in Green Brook, NJ?

In Green Brook's single-family zones: LD-3 requires 121,500 sq ft; LD-1 requires 40,500 sq ft; MD requires 15,000 sq ft; MHD requires 12,500 sq ft. Undersized existing lots may still be buildable under the ordinance, so check your specific lot.

How big a house can I build in Green Brook, NJ?

It depends on the zone, lot size, setbacks, building coverage, height and any floor area limit. Enter an address in our free lot check to get a rough maximum home size for that lot in Green Brook.

Green Brook, NJ Zoning: Minimum Lot Sizes, Setbacks & What You Can Build

Single-Family Zones

Green Brook zoning, zone by zone.

Zone	Min lot (sq ft)	Min width	Front	Side (each / total)	Rear	Bldg coverage	Height
LD-3 LD-3 Residential District	121,500	200 ft	50 ft	15 ft / 35 ft	50 ft	5%	35 ft / 2.5 st
LD-1 LD-1 Residential District	40,500	150 ft	50 ft	20 ft / 50 ft	50 ft	20%	35 ft / 2.5 st
MD MD Residential District	15,000	100 ft	50 ft	10 ft	50 ft	20%	35 ft / 2.5 st
MHD MHD Residential District	12,500	100 ft	35 ft	10 ft	30 ft	20%	35 ft / 2.5 st
HD HD Residential District			30 ft	10 ft	35 ft	20%	35 ft / 2.5 st

Source: The Zoning Ordinance of the Township of Green Brook (printed with amendments through 2019), Adopted 1987; printed with amendments through 2019. Read 2026-09-28. Only zones we could confirm from the ordinance are shown. Rules change and have exceptions (corner lots, undersized lots, steep slopes, overlays), so confirm with the town zoning officer before you buy or design.

Check A Lot

Check any Green Brook address.

Enter an address and we will show the lot size, its zone, roughly how big a new home could be, and how likely a builder is to want it.

Check a lot in Green BrookFree, instant, from the state parcel map and this ordinance.Get our full read on a parcelZoning, density, subdivision, what it will sell for and how fast.Builder deal sheetMonthly: teardown and land opportunities in the towns you build in.

Written and reviewed by

Michael Bulwin

Licensed REALTOR-Associate, Builders Resource Center at Corcoran Sawyer Smith. Advises builders and owners in Green Brook. Numbers updated September 2026.

About Michael · (908) 399-0780

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Green Brook market reportEvery home sold, median prices and the agent who knows the town.What can you build on your lot?Enter an address: zoning, lot size and roughly how big a new home could be.

What can you build in Green Brook?

Green Brook zoning, zone by zone.

Check any Green Brook address.

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