Mercer County, New Jersey Tax Assessors' Office
Mercer County Board of Taxation 640 South Broad Street, Room 317
McDade Administration Building
Trenton, New Jersey 08650
609-396-4510 (Fax) Where is the Mercer County Tax Assessor's Office?
While many counties have county-wide tax assessors, Mercer County has one cities and towns with their own local tax assessors. If your property is located within any of these localities, see that page for your tax assessor's contact information.
What can the Mercer County Assessor's Office do for me?
The Mercer County Tax Assessor's Office oversees the appraisal and assessment of properties as well as the billing and collection of property taxes for all taxable real estate located in Mercer County.
Contact the assessor's office if you need help with paying your property taxes, applying for a homestead exemption or other tax exemption, reporting upgrades to your home, appealing your property tax assessment, or verifying your property records.
Submitting a Mercer County property tax appeal
If you believe that your house has been unfairly overappraised (i.e. appraised at a value higher than the true market value of the property), you can attempt to get your home re-appraised at a lower value by contacting the Assessor's Office to submit a property tax appeal.
You will have to submit a form describing your property and sufficient proof that it is overassessed, including valuations of similar homes nearby as evidence. If your appeal is accepted, your home assessment (and property taxes) will be lowered as a result.
If you would like to appeal your property, call the Mercer County Assessor's Office at (609) 989 6704 and ask for a property tax appeal form. Keep in mind that property tax appeals are generally only accepted in a 1-3 month window each year.
For more information and example appeals, see how to appeal your property taxes.
Useful Mercer County Facts:
The median home value in Mercer County is between $305,096.00 and $313,504.00. Property tax rates are based on property values.
How can I contact Mercer County?
You can try contacting the Mercer County local government directly with any issues the Assessor's Office can't solve. In many counties, certain property records such as deeds are kept in the county courthouse or county archives instead of at the tax assessors' office.
The county seat for Mercer County is located in the McDade Administration Building in Trenton, which is where the Mercer County Assessors' Office is also located. You can direct your general inquiries to Mercer County with the contact info listed below.
Mercer County Phone Number
Mercer County Fax Number
Mercer County McDade Administration Building Address
McDade Administration Building
640 S Broad St
Trenton, NJ 08611-1822
Useful Mercer County Links:
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Mercer County Assessors' Office Homepage
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City of Trenton - GIS Map
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City of Trenton - Property Tax Search
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GIS Map
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City of Trenton - Tax Payments
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Property Tax Search Tool
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Mercer County Government Homepage