Union County, New Jersey Tax Assessors' Office

Where is the Union County Tax Assessor's Office?

While many counties have county-wide tax assessors, Union 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 Union County Assessor's Office do for me?

The Union 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 Union 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 Union 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 Union County Assessor's Office at (908) 527 4775 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.

How can I contact Union County?

You can try contacting the Union 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 Union County is located in the County Administration Building in Elizabeth, which is located at Elizabethtown Plaza. You can direct your general inquiries to Union County with the contact info listed below.

Union County Phone Number

908-527-4100

Union County Fax Number

908-289-4143

Union County County Administration Building Address

County Administration Building
Elizabethtown Plaza
Elizabeth, NJ 07202

Useful Union County Links:

• Property Tax Search Tool
• Union County Assessors' Office Homepage
• Union County Government Homepage
• City of Plainfield - Property Tax Search
• GIS Map
• City of Elizabeth - Property Tax Search