01New construction in Warren County, NJ
Warren County new construction homes for sale.
Browse new construction homes for sale in Warren County, New Jersey. New building here is more measured than in the eastern suburbs, concentrated in Hackettstown, Mansfield, Greenwich, and Lopatcong, where builders deliver new single-family homes, townhomes, and active-adult communities, along with custom homes on rural acreage across the county. For buyers who want a brand-new home with modern finishes, a builder warranty, and the chance to choose lot and options, near Centenary University, the highways, and the Delaware River towns, Warren County offers new-construction choice at prices well below northern New Jersey, shaped by the NJ Highlands Act in the eastern townships and by wells and septic where there is no public water or sewer.
New-construction homes in Warren County generally run from the $400s for townhomes and smaller single-family homes to well past $700,000 for larger custom builds, concentrated in Hackettstown, Mansfield, Greenwich, and Lopatcong and shaped by the NJ Highlands Act in the east and by wells and septic in the rural townships.
Updated Spring 2026
Search Warren County new construction, updated in real time.
Explore the latest homes for sale in Warren County, NJ, updated in real time so you see accurate availability and pricing across the Delaware River towns, the Hackettstown and Washington suburbs, and the rural mountain and farm country.
Warren County is served by districts including Hackettstown, Phillipsburg, and Warren Hills Regional and by Warren County Community College and Centenary University, with Atlantic Health Hackettstown Medical Center and St. Luke's Warren Campus nearby and Interstates 78 and 80 for regional access. Use the price-range pages below to narrow your search, or call 888-327-6555 for a town-by-town update.
When comparing new construction in Warren County, weigh the community's stage, the base price against upgrades, the builder's warranty, and, on rural parcels, the well, septic, perc results, and NJ Highlands Act status, since a Hackettstown subdivision, a Lopatcong home near the Lehigh Valley, and a custom build on acreage carry very different timelines, costs, and land-use constraints.
20 Properties Available In Warren
- 1/34 34
3 Beds 2.5 Baths 1,916 SqFt$499,999Open Sun 1PM-3PM - 1/16 16
4 Beds 3.5 Baths 3,000 SqFt$8,150,000New - 1/29 29
4 Beds 3 Baths$599,000New - 1/31 31
5 Beds 3 Baths 3,067 SqFt$649,900Active - 1/30 30
3 Beds 3 Baths 0.26 Acres Lot$669,900Active - 1/50 50
4 Beds 4 Baths 1.47 Acres Lot$1,349,999Active - 1/45 45
4 Beds 3.5 Baths 3,604 SqFt$929,900Active - 1/29 29
3 Beds 3 Baths 1,306 Sqft Lot$560,000Active - 1/4 4
6 Beds 6.5 Baths 0.26 Acres Lot$899,000Active - 1/21 21
3 Beds 1.5 Baths 4,356 Sqft Lot$375,990Active - 1/33 33
6 Beds 3 Baths 5,227 Sqft Lot$450,990Under Contract60 Brainard St, Phillipsburg Town, NJ 08865
Listed by KELLER WILLIAMS REAL ESTATE
Multi-Family, Commercial
- 1/50 50
5 Beds 3 Baths 7.8 Acres Lot$1,200,000Active - 1/44 44
4 Beds 2.5 Baths 1.33 Acres Lot$899,000Under Contract500 New Jersey 173, Greenwich Twp., NJ 08886
Listed by DOUGLAS ELLIMAN OF NJ LLC.
Single Family Home
- 1/23 23
3 Beds 2.5 Baths 1,306 Sqft Lot$548,893Price Dropped by $25K - 1/46 46
5 Beds 4 Baths 1.04 Acres Lot$1,099,900Active - 1/6 6
4 Beds 3 Baths 3,038 SqFt$874,900Under Contract - 1/6 6
4 Beds 2.5 Baths 3,150 SqFt$789,900Under Contract - 1/19 19
4 Beds 2.5 Baths 0.68 Acres Lot$824,000Price Dropped by $21K 
4 Beds 3.5 Baths 4,791 Sqft Lot$499,999Active- 1/5 5
7,708 SqFt$990,000Price Dropped by $410K
explore listings in Warren
02Explore Communities & Market
Where to find new construction in Warren County.
New construction in Warren County concentrates in Hackettstown, Mansfield, Greenwich, and Lopatcong plus scattered custom builds on rural acreage, and where you look depends on budget, commute, and whether you want a subdivision home or a custom home on land. Families who want a new subdivision or townhome gravitate to Hackettstown and Mansfield near Centenary University and Interstate 80; buyers who want new homes near the Delaware River and the Lehigh Valley look to Greenwich and Lopatcong near Interstate 78; and buyers who want a custom home on acreage look to the rural townships, subject to wells, septic, perc testing, and, in the east, the NJ Highlands Act. Because new building here is measured and shaped by land-use rules and utilities, understanding a community's stage and a parcel's constraints matters. Compare the areas below before you choose.
New-construction character varies by location. Hackettstown and Mansfield offer new subdivisions, townhomes, and active-adult communities near Centenary University, the M&M/Mars plant, and Interstate 80 toward Morris County; Greenwich and Lopatcong offer new homes near Phillipsburg, the Delaware River, and Interstate 78 to the Lehigh Valley; and the rural townships offer custom homes on acreage near Jenny Jump State Forest and the county's farms, where wells, septic, and the NJ Highlands Act in the east shape what and where a buyer can build. That range lets new-home buyers choose among a subdivision home, a low-maintenance townhome, a single-level active-adult residence, and a custom home on land, with the county's two-metro commute in reach.
Warren County new construction is concentrated in Hackettstown, Mansfield, Greenwich, and Lopatcong plus scattered custom builds on rural acreage rather than in large tract developments, so buyers weighing a new home should compare the tradeoffs directly: a subdivision or active-adult home near Interstate 80 offers convenience and public utilities near Centenary University and the county's hospitals, while a custom home on rural land offers space and privacy near Jenny Jump State Forest but brings wells, septic, perc testing, and, in the east, the NJ Highlands Act, and understanding that geography, and how each community's stage and each parcel's constraints affect price and timeline, is central to choosing the right new-construction option.
Timelines, warranties, and choices for new-construction buyers in Warren County.
Buying new construction in Warren County means trading an established neighborhood for a modern home and the ability to shape it. A buyer in a Hackettstown, Mansfield, Greenwich, or Lopatcong subdivision can often choose a lot, floor plan, and finishes, gains a builder warranty and current energy-efficiency standards, and moves into a growing community near the highways and the county's colleges and hospitals. The trade-off is a timeline and, on rural parcels, the added steps of wells, septic, perc testing, and the NJ Highlands Act in the east, so understanding a community's stage and a lot's constraints is central to buying new here.
For new-home buyers, the county's measured building calls for careful comparison. Buyers can weigh subdivisions and townhomes in Hackettstown and Mansfield against new homes near the Delaware River in Greenwich and Lopatcong and custom builds on rural acreage. Families weigh school zone and lot; downsizers weigh single-level active-adult communities near Atlantic Health Hackettstown Medical Center and St. Luke's Warren Campus; and all buyers should compare base prices against the cost of upgrades, confirm what is standard versus optional, read the builder's warranty, and, on rural land, budget for well, septic, and perc testing and confirm NJ Highlands Act status before committing.
Day to day, new-construction life in Warren County pairs a modern, efficient home with the county's rural, two-metro setting. A buyer in a Hackettstown or Mansfield community lives near Centenary University, the M&M/Mars plant, Interstate 80, and Route 46 toward Morris County; a buyer in Greenwich or Lopatcong lives near Phillipsburg, the Delaware River, and Interstate 78 toward the Lehigh Valley; and a buyer of a custom home on acreage lives among the county's farms and forests near Jenny Jump State Forest, on a private well and septic system. That blend of a brand-new home and a scenic Skylands setting, with a choice of two commutes, is the appeal of building or buying new in Warren County.
Because new building in Warren County is measured and shaped by land-use rules and utilities, the smartest use of the market is careful comparison: a to-be-built single-family home in a Hackettstown or Mansfield subdivision, a new home near the Delaware River in Greenwich or Lopatcong, and a custom home on rural acreage subject to wells, septic, perc testing, and the NJ Highlands Act in the east each carry different base prices, timelines, and constraints, so buyers who tour multiple communities, understand each parcel's limitations, and compare them line by line, rather than committing to the first model home, consistently secure a better home and a better value in the county's new-home market.
Search Warren County homes by price.
Jump to a price range or property type that fits your search, browse the Warren County area guide, or check current open houses. Every link below is a live page.
Browse Warren County towns & neighborhoods.
Explore our town-by-town guides near Warren County and across Warren County. Each guide covers local neighborhoods, schools, commute options, and current listings.
Warren County open houses.
Browse upcoming open houses in Warren County, or register for weekly alerts. Call 888-327-6555 to schedule a private showing any day of the week.
Homes for sale by property type.
Explore every type of home in and around Warren County through our Warren County property pages: single-family homes, river-town, mountain, and farm-country homes, townhomes and condos, new construction, 55+ active-adult communities, and multi-family investment properties.
The Warren County new-construction market, by the numbers.
The median list price in Warren County, NJ is currently $432K, about $230 per square foot. Homes here average 45 days on market with roughly 500 active listings. Updated Spring 2026.
Warren County's new-construction market centers on the subdivisions, townhomes, and active-adult communities of Hackettstown and Mansfield, the new homes near the Delaware River in Greenwich and Lopatcong, and custom homes on rural acreage, all shaped by the NJ Highlands Act in the east and by wells and septic where there is no public water or sewer.
Updated Spring 2026
Within Warren County, larger custom homes on acreage and the newest single-family homes command the higher new-construction prices, while new townhomes and smaller single-family homes in Hackettstown, Mansfield, and Lopatcong offer the more attainable entry into new construction. Because new building here is measured and shaped by land-use rules and utilities, a community's stage, a lot's well, septic, and perc results, and, in the east, its NJ Highlands Act status all affect price, availability, and timeline, so buyers benefit from understanding those constraints as closely as the floor plan. Call 888-327-6555 for a street-by-street breakdown.
Why buy new construction in Warren County.
- Modern homes, builder warrantiesNew homes in Hackettstown, Mansfield, Greenwich, and Lopatcong carry builder warranties and current energy-efficiency standards, reducing near-term maintenance.
- Choose lot & finishesMany new subdivisions and custom builds let buyers choose a lot, floor plan, and finishes to shape a home to their needs.
- A two-metro commuteNew communities near Interstate 80 reach Morris County and New York, while those near Interstate 78 reach the Lehigh Valley, a rare commute choice.
- Active-adult optionsSingle-level active-adult communities near Atlantic Health Hackettstown Medical Center and St. Luke's Warren Campus suit downsizers seeking low maintenance.
- Custom homes on acreageThe rural townships offer custom builds on land near Jenny Jump State Forest, subject to wells, septic, and the NJ Highlands Act in the east.
Amenities & community overview.
A closer look at builders, timelines, and choices for new-construction buyers in Warren County.
- Browse all homes for sale in Warren County or explore the wider Warren County market.
- Compare Warren County neighborhoods and home styles before choosing, from attainable options to its premier properties.
- Weigh your commute: Interstate 78, Interstate 80, Route 22, Route 31, Route 46, and Route 57, plus warren County has no commuter rail of its own, so Interstate 78 carries western residents to the Lehigh Valley in Pennsylvania and Interstate 80 carries eastern residents toward Morris County and New York, with NJ Transit buses and the Morristown and Raritan Valley rail lines reachable to the east.
- Explore the Delaware River town of Phillipsburg across from Easton, Centenary University in Hackettstown, the Victorian county seat of Belvidere, Jenny Jump State Forest, and the Delaware Water Gap, with parks, dining, and rail access nearby.
- Call 888-327-6555 for a live, neighborhood-by-neighborhood market update in Warren County.
New-construction life in Warren County pairs a modern, efficient home with the county's rural, two-metro setting. A buyer in a Hackettstown or Mansfield subdivision, townhome, or active-adult community lives near Centenary University, the M&M/Mars plant, and Interstate 80 toward Morris County and New York; a buyer in Greenwich or Lopatcong lives near Phillipsburg, the Delaware River, and Interstate 78 toward the Lehigh Valley; and a buyer of a custom home on rural acreage lives among the county's farms and forests near Jenny Jump State Forest, on a private well and septic system. Because new building here is measured and shaped by land-use rules and utilities, buyers who compare communities, understand each one's stage and timeline, budget for upgrades, and, on rural parcels, confirm wells, septic, perc results, and NJ Highlands Act status find modern homes at values well below northern New Jersey, with the county's rare choice of commuting west to the Lehigh Valley or east toward Morris County always in reach.
Resources for buyers & sellers.
Local and county government, schools, healthcare, transportation, parks, and financial assistance relevant to Warren County, NJ buyers and sellers, every link verified and described below.
First-time home buyer programs in Warren County.
First-time buyer in Warren County or Warren County, NJ? The New Jersey Dream Homeownership Program from NJHMFA helps eligible buyers with affordable financing, down payment and closing-cost assistance, and homebuyer education. Special options are available for military members, public safety professionals, educators, and healthcare workers.
03Connect for Answers
Frequently asked questions.
Where is the most new construction in Warren County, NJ?
Hackettstown, Mansfield, Greenwich, and Lopatcong see the most new single-family homes, townhomes, and active-adult communities, along with scattered custom homes on rural acreage. Building here is measured and shaped by land-use rules and utilities. Call 888-327-6555 for current communities.
How does the NJ Highlands Act affect new construction in Warren County?
The NJ Highlands Act adds land-use and development constraints in the eastern part of the county, which can affect where and how much a buyer can build. It matters most for land, subdivisions, and custom homes in the east. We can help you understand a specific parcel or community.
Do new-construction homes in Warren County have wells and septic?
Often, in the rural townships. Where there is no public water or sewer, new homes rely on private wells and septic systems that require perc testing and permits, while subdivisions in Hackettstown, Mansfield, and Lopatcong are more likely to have public utilities. Confirm for any specific community or lot.
Can I build a custom home in Warren County?
Yes. The rural townships offer land for custom homes near Jenny Jump State Forest and the county's farms, subject to wells, septic, perc testing, and, in the east, the NJ Highlands Act. We can help you find land and connect with builders. See our land page.
Are there active-adult new-construction communities in Warren County?
Yes. Hackettstown, Mansfield, Greenwich, and Lopatcong include active-adult and single-level new communities near Atlantic Health Hackettstown Medical Center and St. Luke's Warren Campus, suited to downsizers seeking low maintenance. See our 55+ page.
How do base prices and upgrades work on Warren County new construction?
Builders typically advertise a base price, with lots, finishes, and options priced separately. Buyers should confirm what is standard versus optional, compare the fully optioned price across builders, and, on rural land, budget for well, septic, and site work before committing.
What is the commute like from a Warren County new-construction home?
It depends on the community. The county has no commuter rail, so new homes in Hackettstown and Mansfield reach Interstate 80 toward Morris County and the New York rail lines, while those in Greenwich and Lopatcong reach Interstate 78 toward the Lehigh Valley, a rare choice of two job markets.
How long does new construction take in Warren County?
Timelines vary by community stage and, on rural land, by well, septic, perc testing, and permitting. A quick-delivery home in an active subdivision can close in months, while a custom home on rural acreage subject to the NJ Highlands Act can take considerably longer. We can help you gauge a specific project.
Should I buy new construction or an existing home in Warren County?
New construction in Hackettstown, Mansfield, Greenwich, or Lopatcong offers modern finishes, a warranty, and customization, while existing homes in the river towns and suburbs offer established neighborhoods and value. We can help you weigh both for your budget and timeline.
Can Four Point Realty help me buy new construction in Warren County?
Yes. We help new-home buyers compare builders and communities, review base prices, upgrades, and warranties, and, on rural land, navigate wells, septic, and NJ Highlands Act considerations across Hackettstown, Mansfield, Greenwich, and Lopatcong. Call 888-327-6555 to start.
How do I get alerts for new-construction listings in Warren County?
Register for a free account and set your community, price, and home-type filters, or call 888-327-6555 and we will set up a curated new-construction search for you.
What areas near Warren County should new-construction buyers also consider?
Buyers sometimes compare Warren's new communities against neighboring Hunterdon, Morris, or Sussex County for additional subdivisions and custom-home land in the Skylands. We can help you weigh the trade-offs.
Do new-construction homes in Warren County come with warranties?
Yes. Builders in Hackettstown, Mansfield, Greenwich, and Lopatcong typically provide a builder warranty covering workmanship and systems for a set period, along with current energy-efficiency standards. Confirm the specific coverage and term for any community before committing.
Why choose Four Point Realty for your search.
Buying or selling a home is one of the biggest financial decisions you will make. Four Point Realty is a trusted NJ real estate resource led by Naveen Sharma, offering current listings, strong local market knowledge, and honest insights from the first showing to the closing table. Call 888-327-6555 today.
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