Middlesex County, New Jersey Tax Assessors' Office

Where is the Middlesex County Tax Assessor's Office?

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

The Middlesex 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 Middlesex 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 Middlesex 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 Middlesex County Assessor's Office at (732) 390 7080 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 Middlesex County?

You can try contacting the Middlesex 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 Middlesex County is located in the County Administration Building in New Brunswick, which is located at PO Box 871. You can direct your general inquiries to Middlesex County with the contact info listed below.

Middlesex County Phone Number

732-745-3080

Middlesex County Fax Number

732-745-3110

Middlesex County County Administration Building Address

County Administration Building
PO Box 871
New Brunswick, NJ 08903-0871

Useful Middlesex County Links:

• City of Perth Amboy - Property Tax Search
• Property Tax Search Tool
• Middlesex County Government Homepage
• Middlesex County Assessors' Office Homepage
• City of New Brunswick - Property Tax Search
• Borough of Sayreville Property Tax Search