Mansfield Township Property Guide

Real Estate

Port Murray · Anderson · Beattystown · Rural Mansfield

Explore Mansfield's mix of historic village homes, detached suburban neighborhoods, acreage, farmland and rental housing — with the zoning, tax, well, septic, flood, school and land-use information that matters before buying, selling or renting.

Rural + Suburban Warren County Historic village homes
Acreage & farmland
Detached subdivisions
Route 57 convenience
Property guide, not live inventory: NJTGO does not present sample homes as current real-estate listings. Asking prices, availability, assessments, taxes, zoning, flood designations, farm status and property conditions change continually. Verify every parcel-specific fact through current records and qualified professionals.
Postal address does not establish the municipality: Mansfield Township properties may use Port Murray 07865, Hackettstown 07840, Washington-area, or other mailing addresses. Confirm the tax municipality and block/lot before relying on school, zoning, tax or permit information.

Mansfield Township Property Profile

Mansfield is a large Warren County township where residential conditions vary substantially between historic villages, Route 57 neighborhoods, newer subdivisions and rural acreage.

PreK–6Mansfield Elementary School
7–8Warren Hills Regional Middle School
9–12Warren Hills Regional High School
Private SystemsWell and septic are common parcel-level concerns
FarmlandAgricultural and preserved-land character remains important
Route 57Main shopping and commuting corridor
Why parcel research matters here: Two properties with the same Port Murray mailing address can differ greatly in acreage, road frontage, zoning, well/septic conditions, flood exposure, farmland status and development potential. Mansfield rewards block-and-lot due diligence.

Homes & Property Types

Historic Village Homes Port Murray, Anderson and Beattystown include older homes tied to nineteenth- and early twentieth-century settlement patterns, including properties near the Morris Canal and Musconetcong corridor.
Detached Suburban Homes Later residential neighborhoods include ranches, colonials, split-levels and other detached homes with a range of lot sizes and commuting access to Route 57 and Route 31.
Acreage & Rural Homes Large-lot properties remain part of Mansfield's identity, particularly away from the denser Route 57 and village areas.
Farm & Agricultural Property Working farms, woodland and properties receiving farmland assessment require specialized review of qualifying use, acreage, income documentation and rollback-tax risk.
Apartments & Rentals Mansfield also has multifamily and rental housing, including garden-apartment and village-area options. Rental availability should be verified directly rather than assumed from an old directory entry.
Commercial / Mixed Corridors Route 57 contains major shopping centers, business zoning and industrial uses. Property near the corridor can have different traffic, access, signage, environmental and redevelopment considerations from interior residential areas.

Communities & Residential Character

Neighborhood names are useful orientation points, but zoning and municipal records control the parcel.

Port Murray

The township's largest village combines historic housing, municipal and school facilities, Morris Canal heritage and newer homes outside the village core.

Anderson

Route 57 and the Musconetcong Valley shape this historic part of Mansfield, where older housing, small lots and nearby rural parcels can exist close together.

Beattystown

The southern Route 57 area blends residential neighborhoods with major retail and easy access toward Hackettstown, making location verification especially important when a listing uses a Hackettstown mailing address.

Rockport & Rural Interior

Interior township roads include farms, wooded parcels, larger lots and homes where driveway, well, septic, slope and stormwater questions may be more important than subdivision amenities.

Route 57 Corridor

Convenient shopping and services are a major advantage, but buyers should evaluate traffic, driveway access, commercial neighbors, flood conditions and future land-use plans on corridor parcels.

Preserved Open Space

Morris Canal Greenway lands, county parkland, agricultural land and other preserved areas help define Mansfield's rural character but can also affect what neighboring land may or may not become.

Farmland, Woodland & Large Parcels

Mansfield's agricultural landscape makes farmland-assessment and development-potential questions especially important.

Farmland Assessment

The Tax Assessor provides current farmland and woodland assessment applications. A property's current preferential assessment should never be assumed to continue automatically after a sale or change in use.

Rollback Taxes

Changing qualifying farmland to a non-agricultural use can create rollback-tax consequences. Buyers considering conversion, subdivision or residential expansion should obtain professional tax and legal guidance.

Woodland Management

Woodland-qualified property may have separate management-plan and filing requirements. Confirm current status with the assessor and appropriate forestry professionals.

Subdivision Potential

Acreage alone does not determine the number of buildable lots. Zoning, frontage, soils, septic suitability, wetlands, stream buffers, slopes and road access all matter.

Zoning, Land Use & Improvements

Mansfield requires zoning review for new construction, additions, alterations, changes in use and accessory structures.

Zoning Permit

Applications must be accompanied by a survey or plot plan showing property lines, existing structures, the septic system, well and proposed improvements drawn to scale with setbacks and dimensions.

Driveway & Site Changes

A driveway application also requires zoning review. Soil importation, grading and larger site changes can require additional municipal approvals.

Land Use Board

The Land Use Board handles applicable subdivision, site-plan and variance applications and publishes checklists and current fee schedules.

2026 Planning Review

Mansfield's Land Use Board currently publishes 2026 Master Plan reexamination documents and a Fourth Round Housing Element & Fair Share Plan. Buyers considering development should review the most current planning material, not only today's zoning label.

Private Wells, Septic Systems & Utilities

Many Mansfield transactions require more utility due diligence than a typical fully sewered suburban community.

Private Well Records

Warren County provides an online database of septic and well records searchable by municipality, street address or block and lot. Use it early in the property investigation.

Onsite Septic

Where a property uses an onsite wastewater system, review installation and repair records, location, capacity, age, maintenance history and any known malfunction or replacement issues.

Water Testing

A private well should be evaluated under current New Jersey testing requirements and the purchase contract. Water quality, yield and treatment equipment can materially affect ownership costs.

Expansion & Additions

Adding bedrooms or changing use can affect septic-capacity requirements. Confirm feasibility before assuming an addition or conversion will be approved.

Record-search shortcut: Warren County specifically identifies septic and well records as available in its public database without requiring an OPRA request.

Floodplain, Streams & Drainage

Mansfield includes several significant waterways and low-lying corridors, so flood and stormwater review should be parcel-specific.

Musconetcong River

The Musconetcong forms much of Mansfield's southern edge. Properties near the river and associated tributaries deserve careful floodplain, erosion and riparian-buffer review.

Pohatcong Creek & Tributaries

Pohatcong Creek and smaller tributaries cross the township. A property may have flood or stream-buffer constraints even when the house itself sits above the mapped hazard area.

Route 57 & Valley Areas

Low-lying corridor parcels should be reviewed for FEMA mapping, drainage history, culverts, driveway access and stormwater patterns before purchase.

Current Mapping

Use the FEMA Flood Map Service Center and NJDEP mapping tools for the exact parcel and structure. Third-party “flood factor” scores are useful screening tools but do not replace official mapping.

Property Taxes, Assessments & Records

Mansfield provides online tax information, while the Tax Assessor maintains assessment records, tax maps and exemption or deduction applications.

Tax Assessor Jason Laliker, CTA
908-689-6151 ext. 117

The assessor maintains property-assessment records, tax maps, sales analysis and farmland/woodland assessment applications.

Tax Collector Joseph Guerin, CTC
908-689-6151 ext. 115

Property taxes are billed quarterly, with current amounts and payment status available through the township's online tax system.

Added Assessments

Recent improvements can generate added-assessment bills. Buyers should confirm whether a completed addition, new structure or major improvement has already been incorporated into the regular tax bill.

Appeals & Assessment Dates

The assessor publishes current deadlines, including the April 1 tax-appeal filing deadline and annual valuation schedule.

Schools & Property Search

Mansfield operates its own elementary district through Grade 6 and participates in the Warren Hills Regional School District for Grades 7–12.

Mansfield Elementary School PreK–Grade 6
50 Port Murray Road
Port Murray, NJ 07865
908-689-3212

The district currently serves more than 580 students in preschool through Grade 6.

Warren Hills Regional Middle School Grades 7–8
64–66 Carlton Avenue
Washington, NJ 07882
908-689-0750

Mansfield students enter the regional district beginning in Grade 7.

Warren Hills Regional High School Grades 9–12
41 Jackson Valley Road
Washington, NJ 07882
908-689-3050

Warren Hills identifies Mansfield Township as one of its regional sending communities.

Verify residency, not the mailing city: School enrollment follows municipal residency and district boundaries. A Hackettstown or Port Murray postal address by itself does not establish eligibility.

Buyer Checklist

Confirm the Parcel
  • Verify Mansfield Township jurisdiction.
  • Confirm block, lot and tax record.
  • Review the current zoning map.
  • Check deed restrictions, easements and survey boundaries.
Review Well & Septic
  • Search Warren County records.
  • Review system age, capacity and maintenance.
  • Test the private well as required.
  • Understand replacement-area feasibility.
Review Land & Water
  • Check FEMA and NJDEP flood mapping.
  • Identify streams, wetlands and buffers.
  • Review slope, drainage and driveway conditions.
  • Do not assume acreage is fully usable.
For Farm / Large Parcels
  • Verify farmland-assessment status.
  • Ask about rollback-tax exposure.
  • Review leases, farm operations and access.
  • Confirm subdivision or building assumptions with the township.

Seller Checklist

Prepare Property Records
  • Gather deed and survey information.
  • Locate permits and Certificates of Occupancy.
  • Compile well and septic records.
  • Confirm current tax status.
Market Accurately
  • Identify Mansfield Township even when the mailing address says Hackettstown.
  • Do not advertise unverified subdivision potential.
  • Do not promise farm-assessment continuation.
  • Describe flood, stream and utility conditions accurately.
Plan for Resale Requirements
  • Review current smoke/CO/fire-extinguisher certificate requirements.
  • Resolve open permit questions early.
  • Address known well or septic issues before closing where practical.
  • Have documentation ready for buyer due diligence.

Finding the Right Real-Estate Professional

Mansfield transactions can involve rural-property, environmental and land-use issues that go well beyond comparing recent sale prices.

Rural Property Experience

For acreage or farm property, look for professionals familiar with wells, septic systems, farmland assessment, surveys, access and land-use limitations.

Municipal-Boundary Knowledge

Agents should understand the difference between Mansfield Township and surrounding Hackettstown, Washington, Oxford and neighboring township markets.

Specialist Support

Use attorneys, surveyors, engineers, septic professionals, well specialists and environmental consultants when the property conditions warrant them.

NJTGO commercial-link policy: Standard real-estate professional listings do not include external commercial website links. Enhanced paid listings and property advertising can include promotional details, photos and direct website or listing links.

Official Property & Planning Resources

Mansfield Township Zoning

Zoning map, setbacks, permit applications and current zoning-officer information.

Land Use Board

Subdivision, site-plan and variance applications, checklists, fee schedules and current planning documents.

Tax Assessor & Collector

Property assessment, farmland/woodland applications, tax bills, added assessments and payment records.

Warren County Records

Septic and well records, land records guidance and public-record information useful during property due diligence.

Professional guidance matters: NJTGO is not an MLS, brokerage, lender, appraisal company, attorney, surveyor, engineer, septic inspector, well-testing company or environmental consultant. Verify legal, financial, structural and environmental issues with appropriately qualified professionals.

More Mansfield Township Guides

Promote Real Estate Services or Property on NJTGO

Real-estate professionals and property marketers can reach people exploring Mansfield Township through NJTGO advertising and enhanced placement. Paid promotional options can include expanded details, photos and external website or listing links.

Real Estate Advertising Contact NJTGO