Mercer County Property Appraiser & Tax Assessor
Real property appraisal records, parcel search lookup, property tax rates, and assessment protest deadlines for Mercer County, New Jersey.
Mercer County Assessor's Office Information
Mercer County Appraisal & Assessment Office, Trenton, NJ 34001
Get Driving Directions ↗Monday - Friday: 8:00 AM - 4:30 PM (Local Time)
Closed on state & federal holidays.
(609) 357-5451
Vital / Monmouth County Open Public Records
Mercer County Property Tax Calculator
Estimated using Mercer County's effective tax rate of 2.27% (Assessment ratio: 100%)
Appealing Your Mercer County Assessment
April 1 (or May 1 in towns undergoing municipal reassessment).
Under New Jersey property tax law, property owners in Mercer County have the legal right to challenge an assessed valuation that exceeds fair market value, is unequally appraised compared to neighboring properties, or contains clerical errors.
Contact the Mercer County Assessor's Office to review your property record card, verify square footage, and present recent comparable sales (comps).
If informal review does not resolve the valuation, file a written notice of appeal with the County Board of Taxation & Tax Court of New Jersey before the statutory deadline.
Was Your Mercer County Home Over-Assessed This Year?
Studies show up to 30% to 60% of US residential properties are overvalued by automated municipal algorithms. Protesting your assessment before the statutory deadline can lower your tax bill by an average of $1,100/year.
Mercer County Homestead Exemptions & Tax Relief
Homeowners in Mercer County who occupy their home as their permanent primary residence may qualify for property tax reductions under state and local homestead programs:
ANCHOR program provides property tax relief up to $1,750 for homeowners making up to $250,000.
Senior Freeze (Property Tax Reimbursement) program reimburses property tax increases for seniors 65+. 100% total exemption for wartime disabled veterans.
Need Deed, Lien, or Title Records for Mercer County?
While the Property Appraiser values real estate for taxation, official legal property transfers, warranty deeds, mortgages, and marriage records in Mercer County are maintained by the County Clerk & Recorder.
Frequently Asked Questions
Where is the Mercer County Property Appraiser office located?
The official Mercer County property appraisal and tax assessment office is located at Mercer County Appraisal & Assessment Office, Trenton, NJ 34001. Operating hours are typically Monday - Friday: 8:00 AM - 4:30 PM (Local Time). You can reach the customer service staff by phone at (609) 357-5451.
What is the property tax rate in Mercer County, NJ?
The average effective property tax rate in Mercer County is approximately 2.27%. For a home with the median county market value of $451.000, the estimated annual property tax is about $10.238 per year.
How do I search for a property or parcel in Mercer County?
You can look up property record cards, assessed valuations, ownership history, and parcel boundary maps online through the official Mercer County parcel search portal: https://mernjpros.gov/assessor/parcel-search.
When is the deadline to appeal my property assessment in Mercer County?
Property valuation protests and appeals in Mercer County must be submitted by: April 1 (or May 1 in towns undergoing municipal reassessment). Appeals are formally reviewed and heard by the County Board of Taxation & Tax Court of New Jersey.
How does the Homestead Exemption work in Mercer County?
ANCHOR program provides property tax relief up to $1,750 for homeowners making up to $250,000. Additional exemptions are available for senior citizens (65+) and disabled military veterans (Senior Freeze (Property Tax Reimbursement) program reimburses property tax increases for seniors 65+. 100% total exemption for wartime disabled veterans.).
Adjacent & Neighboring County Appraisers
County Overview
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