What is the minimum lot size in Demarest, NJ?

In Demarest's single-family zones: R-A requires 40,000 sq ft; R-BB requires 30,000 sq ft; R-B requires 22,500 sq ft; R-C requires 15,000 sq ft; R-D requires 10,000 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 Demarest, 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 Demarest.

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

Single-Family Zones

Demarest zoning, zone by zone.

Zone	Min lot (sq ft)	Min width	Front	Side (each / total)	Rear	Bldg coverage	Height
R-A Single-Family Residence A	40,000	200 ft	50 ft	25 ft	50 ft	15%	33 ft
R-BB Single-Family Residence BB	30,000	150 ft	50 ft	25 ft	50 ft	15%	30 ft
R-B Single-Family Residence B	22,500	150 ft	50 ft	20 ft	40 ft	15%	30 ft
R-C Single-Family Residence C	15,000	100 ft	35 ft	15 ft	30 ft	20%
R-D Single-Family Residence D	10,000	100 ft	25 ft	10 ft	30 ft	20%

Source: Zoning 175 Attachment 1, Borough of Demarest Limiting Schedule, District (Borough-hosted copy of eCode360 attachment), amended through Ord. 1083-20 (10-26-2020). 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 Demarest.

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

12teardowns since 2019older homes and lots bought by builders

$942Kmedian builder paidfor the old house and lot

4,692median new home, sq ftnew homes sold, last 2 years

$3.42Mmedian new home price12 sold, last 2 years

Check A Lot

Check any Demarest 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 DemarestFree, 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

Judy Penaherrera

Licensed Realtor-Associate, NJ & FL, Builders Resource Center at Corcoran Sawyer Smith. Advises builders and owners in Demarest. Numbers updated September 2026.

About Judy · (201) 315-7045

Keep Exploring

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

Demarest market reportEvery home sold, median prices and the agent who knows the town.New construction in DemarestRecent new-home sales, sizes and price per square foot.Land and teardowns in DemarestWhat 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.

What can you build in Demarest?

Demarest zoning, zone by zone.

What the market pays for new homes in Demarest.

Check any Demarest address.

More on Demarest.