Benton County, WA tax sales
How tax deed sales work in Benton County, seat of Prosser: sale calendar, auction platform, over-the-counter lists, and the offices that run each sale.
New to tax sales? Read how Washington tax sales work or look terms up in the glossary.
- Next sale
- Annual, in November.
- Registration
- Bidder registration steps are not published on the county website.
On this page
How Benton County sells delinquent taxes
Tax deed sale
- Run by
- Benton County Treasurer
- Frequency
- annual
- Typical timing
- Annual, in November.
- Registration
- Bidder registration steps are not published on the county website.
When it runs
Registration and deposit
Bidder registration steps are not published on the county website. Contact the Treasurer's foreclosure desk at [email protected] or 509-786-5710 for the current year's sale terms and bidding instructions.
Sale format and venue
Benton County tax sale list and auction calendar
For Benton County tax sale 2026 searches, use the county-run sources below rather than a copied parcel list, and confirm the parcel, registration cutoff, deposit, and payment deadline against the county before you bid.
Get the advertised list
Use Foreclosure and Distraint page (current-year sale listings and past sale results PDFs) for the current advertised parcels, then recheck it before the auction.Register to bid
Sale day
Annual, in November. The auction platform is still being verified. Confirm the next sale date and registration window with the county before you bid.Confirm with the office
If the list, platform, and notice disagree, use Benton County Treasurer as the source to confirm which parcels are actually offered.
Before you bid in Benton County
4 checks
Start with the live sale list
Pull the current advertised parcels from Foreclosure and Distraint page (current-year sale listings and past sale results PDFs). Lists can change before the sale, so recheck the county source before you price a parcel.Confirm registration and deposit
Bidder registration steps are not published on the county website. Contact the Treasurer's foreclosure desk at [email protected] or 509-786-5710 for the current year's sale terms and bidding instructions.
Check the state rules that change the bid
Read the Washington due-diligence checklist before bidding. Redemption, liens that survive a tax deed, title cleanup, and payment deadlines can change what a parcel is worth.Set a walk-away number
Work out what the parcel is actually worth with the rural land value estimator, then turn it into a ceiling with the tax deed max-bid calculator.
Over-the-counter (leftover) purchases
unsold properties
Washington counties keep no standing over-the-counter list. Parcels that draw no sufficient bid are struck to the county in trust for the taxing districts as tax-title property. The county resells that inventory under chapter 36.35 RCW, usually at a later sale at a minimum price fixed by the county legislative authority after three weeks of published notice, and in limited cases by direct sale without bids, including within twelve months after a failed auction. Whether any tax-title inventory exists, and how this county sells it, must be confirmed on the county's tax-title or surplus property page.
New to this path? Read how over-the-counter purchases work.
Use the arrow keys to switch between these sections.
County offices
Tax sale office
509-786-5710 (foreclosure) or 509-735-8505 (Kennewick main office)
620 Market St, PO Box 630, Prosser, WA 99350
Official websiteCounty notes
- Benton County runs on Washington's deed timeline: the Treasurer's page states real property is subject to tax foreclosure once three full years of taxes are delinquent, and the FAQ says the process starts in June and culminates in a final sale in November.
- Sale dates from the county's own results PDFs: November 5, 2025 (cause no. 25-2-01337-03), November 4, 2024, and November 13 and 16, 2023.
- No online auction platform is named anywhere on the Treasurer's site. The annual notice of sale sets the venue and method each year, so verify with the foreclosure desk ([email protected]) before planning to bid.
- The Treasurer keeps two offices: the Prosser courthouse at 620 Market St (2nd floor) and the Benton County Administration Building at 7122 W Okanogan Pl, Suite E110, Kennewick, WA 99336. Tax payments mail to the Kennewick address.
- The personal property distraint sale is a separate process from real property foreclosure; the 2026 distraint sale is an in-person cash sale on September 10, 2026 in Kennewick.
- Excess proceeds go to the former owner: the FAQ states any amount received at sale above the taxes and collection costs due will be given to them.
Washington rules
- Redemption
- Any property on which a certificate of delinquency has been issued may be redeemed at any time before the close of business the day before the day of the sale. Washington has no general post-sale redemption period: once the treasurer sells the parcel, the sale is final for a competent adult owner. The one exception protects minors and persons adjudicated legally incompetent, whose property may be redeemed at any time within three years after the date of sale, on payment of the amount for which the property was sold plus interest at the statutory delinquent-tax rate from the date of sale, plus the reasonable value of improvements made in good faith on the property, less the value of their use. No fee may be charged for any redemption.
- Deed deposit
- For an auction conducted by electronic media, prospective bidders must deposit funds with the treasurer to participate, deposits of non-winning bidders are refunded within ten business days, and payment is by electronic funds transfer. Deposit amounts for in-person sales are set county by county, so confirm the figure on the county treasurer page or the auction platform terms.
- Surplus proceeds
- If the winning bid exceeds the minimum bid due on the whole property, the excess is refunded to the record owner. The record owner is the person who held title on the date the certificate of delinquency was issued. Surplus unclaimed within three years of the sale date is deposited in the county current expense fund, after which the claim is extinguished.
A tax deed does not convey marketable title. Most buyers file a quiet title action before they can resell or insure the property. See the due diligence guide.
Frequently asked questions
Does Benton County, Washington sell tax liens or tax deeds?
How often does Benton County hold tax deed sales?
I own a property in this sale. Can I stop it?
Where can I find the Benton County tax sale list?
Verified Aug 16, 2026 against official county and state sources.
Tax Sale Atlas publishes educational information about public tax sale processes. This is not legal, financial, or investment advice. Rules, dates, and fees change; confirm with the county office before you bid.
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