New York Property Tax Assessors

Suffolk County, New York Tax Assessors' Office

Suffolk County Assessors Phone Number
Suffolk County Real Property Tax Service Agency
300 Center Drive
Riverhead, New York 11901
Suffolk County Assessors Fax Number 631-852-1566 (Fax)

Where is the Suffolk County Tax Assessor's Office?

The Suffolk County Tax Assessor & Real Property Tax Services Office is located at 300 Center Drive, at the County Center building in Riverhead, New York.

What can the Suffolk County Assessor's Office do for me?

The Suffolk 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 Suffolk 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 Suffolk 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 Suffolk County Assessor's Office at (631) 852 1551 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 Suffolk County Facts:

The median home value in Suffolk County is between $422,324.00 and $426,076.00. Property tax rates are based on property values.

How can I contact Suffolk County?

You can try contacting the Suffolk 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 Suffolk County is located in the County Center in Riverhead, which is where the Suffolk County Assessors' Office is also located. You can direct your general inquiries to Suffolk County with the contact info listed below.

Suffolk County Phone Number


Suffolk County Fax Number


Suffolk County County Center Address

County Center
300 Center Dr
Riverhead, NY 11901-3393

Useful Suffolk County Links:

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