Benton County Property Tax Records Search

Benton County property tax records are available online through the county's PACS property search portal, the Treasurer's website, and the Auditor's EagleWeb recording system. The county serves Kennewick, Richland, Prosser, and surrounding communities in southeastern Washington. This page explains how to search Benton County property tax records, pay taxes, appeal your assessed value, and locate recorded documents tied to your parcel.

Benton County Assessor and Property Tax Records

Bill Spencer is the Benton County Assessor. His office determines the value of all taxable real and personal property in the county each year. You can reach him at 509-786-2046 or bill.spencer@co.benton.wa.us. The Assessor's Office operates out of two locations: a Kennewick office open Monday through Friday from 8:30 AM to 4:30 PM, and a Prosser office open Tuesday through Thursday from 8:30 AM to 4:30 PM by appointment only. More information is at bentonwa.org/Assessor.html.

Property in Washington State is assessed at 100% of market value under state law. Benton County conducts annual revaluations. Real property valuations use physical inspections and statistical revaluations that compare properties of similar size, use, and location. Business personal property such as equipment and machinery must be reported annually and is valued at 100% of market value. The Assessor prepares the tax roll and sends it to the County Treasurer for billing and collection. Values, taxing jurisdiction breakdowns, improvement details, land data, and roll value history are all available through the county's online portal.

Search Benton County Property Tax Records Online

The primary tool for looking up Benton County property tax records online is the Harris Govern PACS property search portal. You can search by account number, parcel number (16-digit format), property address, or DBA. The Results Display dropdown lets you select the appraisal year for tax year, including 2025-2026 for current ownership data.

Individual property detail pages in the portal show the account and property ID, abbreviated legal description, parcel and geo ID, tax area, land use code, township, section and range, legal acres, and physical address. Ownership details display owner name, owner ID, mailing address, and percentage ownership. The tax statement section shows first-half and second-half base amounts, penalties, interest, base paid, and amount due for multiple years. An integrated Pay Tax Due feature lets you select tax years and calculate the total owed. Links to the Assessor, Treasurer, and Mapping websites appear on each property page.

The county's GIS Department hub offers interactive web maps, open-data downloads, and a map gallery. Contact the GIS team at gis@co.benton.wa.us or (509) 786-5485. The Benton County Community Portal provides another map-based platform with an area overview, assessment data, census information, sales data, permits, and zoning. Clicking on a parcel icon shows recent sale details directly on the map.

The county also makes bulk assessment data available for download. Per RCW 42.56.070(8), all property owner name data are redacted from the downloadable files for privacy reasons. Anyone needing owner name data must submit a written request to the Treasurer's Office at treasoff@clark.wa.gov.

How Benton County Assesses Property Tax Values

Benton County appraisers perform physical inspections of properties on a cycle map, which property owners can view online. Both real and personal property are assessed every year. The Assessor's statistical revaluation process compares sales of similar homes and commercial properties to set values that match what buyers and sellers agree to in the open market. This method follows requirements set by the Washington State Department of Revenue under RCW 84.40.

The 1% property tax limit in Washington applies to the total amount collected by tax districts, not to individual tax bills. Increases in a specific owner's tax bill usually come from voter-approved levies and from assessed value increases that exceed typical market growth. Property tax increases cannot be appealed, but assessed values can be contested within 60 days of the Notice of Value date. The Assessor's office handles questions about valuations and can explain the basis for a specific assessment.

Benton County Property Tax Payment Options

Kenneth Spencer, Jr. serves as the elected Benton County Treasurer. The Treasurer's Office acts as the property tax collector for Benton County, its cities, school districts, fire departments, and all other taxing authorities. Two public offices handle tax payments. The Prosser location is at 620 Market St, PO Box 630, Prosser, WA 99350; phone 509-786-2255; hours Monday, Wednesday, and Friday 10:00 AM to 2:00 PM. The Kennewick location is at 7122 W Okanogan Pl #E110, Kennewick, WA 99336; phone 509-735-8505; hours Monday through Friday 8:30 AM to 4:30 PM. The general email is Treasurer@co.benton.wa.us. An automated information line is at 509-786-5710.

Tax due dates follow the state schedule under RCW 84.56: first half is due April 30, second half is due October 31 if the total exceeds $50. Online payments are available through bentoncountytax.com. You can pay by electronic check (fee: $1.00), credit card (fee: 2.50% of the payment), or VISA debit card (fee: $3.95). These fees are charged by the vendor under authority of RCW 36.29.190. Returned payments carry a $35 fee. Once a Certificate of Delinquency is filed, online payments stop being accepted and payment must be made by cashier's check or cash. The Tax Processing Center is at the Kennewick address above. Foreclosure contact email is Foreclosure@co.benton.wa.us.

Note: Payments under protest must comply with RCW 84.68.020 and WAC 458.18.215. The Treasurer's Office holds the file but does not determine legal sufficiency of a protest.

Benton County Property Tax Exemptions

Benton County offers several exemption programs. The Senior Citizens and Disabled Persons Exemption reduces the taxable value for qualifying homeowners. Income limits have been updated by the state; check the current year's threshold on the Washington DOR exemptions page. The county also has an Open-Space Farm Exemption for qualifying agricultural land. Applications go through the Assessor's Office in Kennewick or Prosser. Bring proof of income and ownership when you apply.

Appeals on exemption denials follow the same process as assessment appeals. File with the county Board of Equalization within the deadline on your notice. If you need further review, the Washington State Board of Tax Appeals is the next step after a county board decision.

Benton County Auditor and Recorded Property Documents

Brenda Chilton is the Benton County Auditor. The Auditor's Recording Division provides the EagleWeb online document search for recorded documents from January 1, 1972 to the present. The Kennewick office is at 7122 W Okanogan Pl, Suite E120, Kennewick, WA; phone (509) 736-2727; hours 8:30 AM to 4:30 PM Monday through Friday. The index is updated regularly.

Copies printed from EagleWeb are unofficial. Official copies must be obtained by visiting the office or by mail. Copy fees are $1.00 per page. Certified copies are $3.00 for the first page and $1.00 per additional page per document. Due to privacy concerns, the Auditor's Office may limit some document information to the index only. Copies of those documents are available by written request. Send mailed requests with the Auditor's File Number and a return address to: Benton County Auditor Recording Department, 7122 W Okanogan Pl., Ste E120, Kennewick, WA 99336.

For county contact details verified by the state, see propertytax.dor.wa.gov/county-contacts.

Cities in Benton County

Benton County includes several cities with active property records. All property tax records are managed through the county Assessor and Treasurer, regardless of which city a parcel is in.

Other communities in Benton County include Prosser, West Richland, Benton City, and Finley. Property tax records for parcels in all of these areas go through the Benton County Assessor and Treasurer.

Nearby Counties

These counties border Benton County in south-central Washington.