Union County, New Jersey · For builders and owners

What can you build in Westfield?

The single-family zoning rules in Westfield, zone by zone, read from the town ordinance by our builder desk. Then check any address to see what fits on that lot.

Single-Family Zones

Westfield zoning, zone by zone.

Zone	Min lot (sq ft)	Min width	Front	Side (each / total)	Rear	Bldg coverage	Height	FAR
RS-40 RS-40 Single Family Residence District	40,000	175 ft	60 ft	20 ft	60 ft		35 ft / 2.5 st
RS-24 RS-24 Single Family Residence District	24,000	120 ft	50 ft	15 ft	50 ft		33.5 ft / 2.5 st
RS-16 RS-16 Single Family Residence District	16,000	90 ft	40 ft	15 ft	40 ft		33.5 ft / 2.5 st
RS-12 RS-12 Single Family Residence District	12,000	75 ft	40 ft	12.5 ft	35 ft		32.75 ft / 2.5 st
RS-10 RS-10 Single Family Residence District	10,000	70 ft	40 ft	10 ft	35 ft		32 ft / 2.5 st
RS-8 RS-8 Single Family Residence District	8,000	60 ft	40 ft	10 ft	35 ft		32 ft / 2.5 st
RS-6 RS-6 Single Family Residence District	6,000	50 ft	40 ft	10 ft	35 ft		32 ft / 2.5 st

Source: Town of Westfield Land Use Ordinance, Article 11: Zone District Regulations (bulk per zone) and Article 12: General Zoning Regulations (§ 12.04E-G FAR and coverage sliding scales, https://ecode360.com/33927965). 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.

What Builders Build Here

What the market pays for new homes in Westfield.

Zoning tells you what you are allowed to build. These numbers tell you what sells.

139teardowns since 2019older homes and lots bought by builders

$700Kmedian builder paidfor the old house and lot

3,322median new home, sq ftnew homes sold, last 2 years

$1.78Mmedian new home price31 sold, last 2 years

Check A Lot

Check any Westfield 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 WestfieldFree, 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.

Igor Guberuk

Written and reviewed by

Igor Guberuk

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

About Igor · (718) 812-3777

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Selling a home in WestfieldWhat homes sold for, what a builder might pay, and a free price estimate.Moving to WestfieldWhat your budget buys, how old the homes are, and what is for sale now.

Westfield market reportEvery home sold, median prices and the agent who knows the town.New construction in WestfieldRecent new-home sales, sizes and price per square foot.Land and teardowns in WestfieldWhat builders paid for older homes, and lots for sale now.What can you build on your lot?Enter an address: zoning, lot size and roughly how big a new home could be.