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 on September 23, 2026.
Mercer County, New Jersey, has about 392,000 residents (2024 Census Bureau estimate). The title to a parcel in Mercer 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, directory links, city permits, evictions and court cases, records requests and common questions.
Related guides: Mercer County public records, Mercer County arrest records, Mercer County warrants, Mercer County criminal records, Mercer County court records, New Jersey arrest records and New Jersey inmate search.
Deeds, Mortgages and Liens in Mercer County
Deeds, mortgages, liens and easements that affect title to land in Mercer 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 mercercounty.org/government/county-clerk/office-services/land-records (page title: Land Records | Mercer County, NJ), phone 609-278-2711, which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Mercer County
The value each parcel in Mercer 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 mercercounty.org/government/board-of-taxation/driving-directions-282 (page title: Tax Assessors | Mercer County, NJ), phone 609-443-4000, 88 East Broad Street Hopewell, NJ 08525, which answered when SearchSystems opened it on September 23, 2026.
More Official Property and Land Records Pages for Mercer County
The SearchSystems directory, online since 1997, lists the official pages for Mercer County and New Jersey. These property pages from its Mercer County listing were opened again on October 2, 2026 and each one still answers:
- Office of the Tax Assessor (princetonnj.gov)
- Property Alert Service (records.mercercounty.org)
- Property Information Portal (mercercounty.org)
- Search Assessment and Tax Records (mercercounty.org)
Permits and City Records in the Cities of Mercer County
Building permits, zoning and code cases inside a city are the city's own records. The cities in Mercer County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Trenton: the city hall page SearchSystems verified is at trentonnj.org/m/directory/department?did=45, phone 609-989-3000 (verified September 25, 2026).
- Princeton: the city hall page SearchSystems verified is at princetonnj.gov (verified September 25, 2026).
Evictions and Court Cases About Land in Mercer County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Superior Court of New Jersey, Mercer County, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at njcourts.gov/courts/vicinages/mercer/offices, phone 609-571-4200.
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 Mercer County?
The County Clerk, at mercercounty.org, phone 609-278-2711. Deeds, mortgages and liens on land in Mercer County are filed there.
Who sets the assessed value of a property in Mercer County?
The tax assessor of each municipality.
Where are evictions from Mercer County filed?
In the Superior Court of New Jersey, Mercer 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 Mercer 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.