Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and October 4, 2026.
Warren County, New Jersey, has about 112,000 residents (2024 Census Bureau estimate). The title to a parcel in Warren County is in the deed records of the County Clerk and its taxable value is set by the town assessor; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, city permits, evictions and court cases, records requests and common questions.
Related guides: Warren County public records, Warren County arrest records, Warren County warrants, Warren County inmate search, Warren County criminal records, New Jersey arrest records and New Jersey inmate search.
Deeds, Mortgages and Liens in Warren County
Deeds, mortgages, liens and easements that affect title to land in Warren County are recorded by the County Clerk, which indexes them by name and sells copies.
SearchSystems opened and checked the County Clerk's page at warrencountynj.gov/government/warren-county-clerk-s-office/public-l... (page title: Public Land Records | Warren County, NJ), phone 908-475-6211, 413 Second Street Belvidere, NJ 07823, Monday - Friday 8:00 a.m. to 4:30 p.m., which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Warren County
The value each parcel in Warren County is taxed on is set locally, by the tax assessor of each municipality, not by the county. New Jersey property is assessed by each municipality; the county tax board hears appeals and equalizes the values.
The county property tax office's page SearchSystems verified is at warrencountynj.gov/government/warren-county-clerk-s-office/public-l... (page title: Public Land Records | Warren County, NJ), phone 908-475-6211, 413 Second Street Belvidere, NJ 07823, Monday - Friday 8:00 a.m. to 4:30 p.m., which answered when SearchSystems opened it on September 23, 2026.
Permits and City Records in the Cities of Warren County
Building permits, zoning and code cases inside a city are the city's own records. The cities in Warren County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Phillipsburg: the city clerk's page SearchSystems verified is at phillipsburgnj.org/our-town/departments/town-clerk, phone 908-454-5500 (verified September 25, 2026).
- Hackettstown: the city hall page SearchSystems verified is at hackettstownpd.net/358/Mayor-Town-Council (verified September 25, 2026).
Evictions and Court Cases About Land in Warren County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Superior Court of New Jersey, Warren County, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at warrencountynj.gov/government/warren-county-clerk-s-office, phone 908-475-6211.
Asking a County Office for a Record
Under the Open Public Records Act a county office must answer a request within 7 business days, and it may charge copying at 5 cents a page for letter size.
Frequently Asked Questions
Who records deeds in Warren County?
The County Clerk, at warrencountynj.gov, phone 908-475-6211. Deeds, mortgages and liens on land in Warren County are filed there.
Who sets the assessed value of a property in Warren County?
The tax assessor of each municipality.
Where are evictions from Warren County filed?
In the Superior Court of New Jersey, Warren County. The file is public unless the court seals it.
How is property assessed in New Jersey?
New Jersey property is assessed by each municipality; the county tax board hears appeals and equalizes the values.
Is this the official Warren County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.