Cowlitz County, Washington Tax Assessors' Office

Where is the Cowlitz County Tax Assessor's Office?

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

The Cowlitz 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 Cowlitz 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 Cowlitz 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 Cowlitz County Assessor's Office at (360) 577 3010 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 Cowlitz County?

You can try contacting the Cowlitz 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 Cowlitz County is located in the County Administration Building in Kelso, which is where the Cowlitz County Assessors' Office is also located. You can direct your general inquiries to Cowlitz County with the contact info listed below.

Cowlitz County Phone Number

360-577-3020

Cowlitz County Fax Number

360-423-9987

Cowlitz County County Administration Building Address

County Administration Building
207 4Th Ave N
Kelso, WA 98626-4124

Useful Cowlitz County Links:

• Pay Your Property Tax
• Cowlitz County Assessors' Office Homepage
• Property Tax Search Tool
• Cowlitz County Government Homepage