Coos County, New Hampshire Tax Assessors' Office

Where is the Coos County Tax Assessor's Office?

While many counties have county-wide tax assessors, Coos County has nine 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.

Submitting a Coos 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 Coos County Assessor's Office (or your town or city assessor's office) 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 Coos County?

You can try contacting the Coos 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 Coos County is located in the in Lancaster, which is located at PO BOX 10. You can direct your general inquiries to Coos County with the contact info listed below.

Coos County Phone Number

603-246-3321

Coos County Fax Number

603-246-8117

Coos County Address

PO BOX 10
West Stewartstown, NH 03597-0010

Useful Coos County Links:

• Coos County Government Homepage
• City of Berlin - Top Ten Taxpayers
• Town of Gorham - Property Tax Search
• Coos County View by map and lot
• Town of Gorham - Tax Maps
• Coos County GIS Maps