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Tax Sale Atlas

Harper County, OK tax sales

How tax deed sales work in Harper County, seat of Buffalo: sale calendar, auction platform, over-the-counter lists, and the offices that run each sale.

New to tax sales? Read how Oklahoma tax sales work or look terms up in the glossary.

Next sale
Second Monday of June each year.
Format
In person
Registration
Harper County posts no online registration step and no advance deposit.
County office
580-735-2442
Every displayed fact carries a source badge. Verified Aug 31, 2026 against official county and state pages.How we verify
On this page

How Harper County sells delinquent taxes

No tax lien certificate sale

No Oklahoma county sells a tax lien certificate, or any other interest-bearing instrument, to a private investor. The county treasurer collects delinquent taxes and, once the three-year clock in 68 O.S. 3105 has run, sells the parcel itself at the June resale.

Tax deed sale

In person
Run by
Harper County Treasurer
Frequency
annual
Typical timing
Second Monday of June each year.
Registration
Harper County posts no online registration step and no advance deposit.
Sale list
Tax Roll Inquiry, unpaid taxes filter
When it runs
Second Monday of June each year. The treasurer's office states that it "conducts a public auction on the second Monday of each June," matching the resale date 68 O.S. 3125 fixes for every Oklahoma county.
Registration and deposit

Harper County posts no online registration step and no advance deposit. Bidding happens in the room at the treasurer's office, 311 SE 1st St in Buffalo, and 68 O.S. 3129 requires resale purchases be paid for in cash. Ring 580-735-2442 before sale day to confirm the starting hour, which each Oklahoma treasurer sets locally between 8 a.m. and 5 p.m., and to confirm the payment forms the office will accept.

Sale format and venue
Harper County runs the resale in person and offers no online bidding. The treasurer describes the auction as open to the public with every property sold to the highest bidder, and the office hands out parcel lists starting in May, the month before the sale. Under 68 O.S. 3129 nothing may sell for less than the smaller of two-thirds of the current assessed value or the full amount of taxes, penalties, interest and costs owed, and any parcel drawing no qualifying bid is bid off in the name of the county and deeded to the county commissioners. A resale deed cancels the delinquent taxes and vests absolute and perfect title in fee simple under 68 O.S. 3131, with two limits worth pricing in: 68 O.S. 3119 conveys only the surface plus whatever mineral interest the surface owner held, so severed minerals stay where they are, and the deed remains open to challenge for 12 months after the county clerk records it. An owner may redeem right up to the moment the treasurer executes the deed, so parcels fall off the list late. In person at the Harper County Treasurer's office
Source: Harper County Treasurer· Verified Aug 31, 2026

Harper County tax sale list and auction calendar

For Harper 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. If the parcels on this list are vacant land rather than houses, what buying land at a tax sale hands you is the place to start.

  1. Get the advertised list

    Use Tax Roll Inquiry, unpaid taxes filter for the current advertised parcels, then recheck it before the auction.

  2. Register to bid

    Harper County posts no online registration step and no advance deposit. Full requirements are in the sale card above.

  3. Sale day

    Second Monday of June each year. The sale is live and in person; there is no online bidding platform. Confirm the venue and hour with the county office before you go.

  4. Confirm with the office

    If the list, platform, and notice disagree, use Harper County Treasurer as the source to confirm which parcels are actually offered.

Before you bid in Harper County

  1. Start with the live sale list

    Pull the current advertised parcels from Tax Roll Inquiry, unpaid taxes filter. Lists can change before the sale, so recheck the county source before you price a parcel.

  2. Confirm registration and deposit

    Harper County posts no online registration step and no advance deposit. Bidding happens in the room at the treasurer's office, 311 SE 1st St in Buffalo, and 68 O.S. 3129 requires resale purchases be paid for in cash. Ring 580-735-2442 before sale day to confirm the starting hour, which each Oklahoma treasurer sets locally between 8 a.m. and 5 p.m., and to confirm the payment forms the office will accept.

  3. Check the state rules that change the bid

    Read the Oklahoma due-diligence checklist before bidding. Redemption, liens that survive a tax deed, title cleanup, and payment deadlines can change what a parcel is worth. Which liens survive is state law, so read what survives a tax deed in Oklahoma before you price the title work.

  4. 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

Oklahoma has no certificate to buy over the counter. What a county can sell between resales is its own stock of parcels bid off at a past resale and held by the board of county commissioners. There are two routes. A buyer can submit a bid to the treasurer, who then advertises it once in each of the three consecutive weeks before a stated sale date; on that date the parcel goes to the highest competitive bidder for cash or certified funds, or back to the original bidder if nobody outbids them. Or the county can hold a periodic auction of its resale stock at a time the treasurer sets. Either way the sale needs the approval of the board of county commissioners, a bid below the taxes owed at the original resale also needs the county excise board, and the buyer covers advertising, sale costs and the recording fee on top of the bid. Counties usually publish this inventory as a county-owned property list, on no fixed schedule.

New to this path? Read how over-the-counter purchases work. Every state has its own name for what goes unsold, so check what Oklahoma calls its leftover tax-sale inventory.

Use the arrow keys to switch between these sections.

County offices

Tax sale office

Harper County Treasurer

580-735-2442

P.O. Box 440, Buffalo, OK 73834 (office at 311 SE 1st St, Buffalo, OK 73834)

Official website

County notes

  • Older guides still describe an Oklahoma October tax lien certificate sale paying 8 percent. No such sale exists in Harper County or anywhere else in the state. June is the only tax sale on the calendar, and it sells the deed.
  • The Harper County Treasurer publishes through a website system shared by many Oklahoma county treasurers, and the auction paragraph is worded almost identically from county to county. The second Monday of June is right for Harper because 68 O.S. 3125 sets that date for every county, but check that the page header reads Harper County and Carla J. Shuman before trusting any other detail on it.
  • Oklahoma places the resale at the county treasurer's office rather than a courthouse auction room, and Harper County's office is at 311 SE 1st St in Buffalo, the county seat. The treasurer sets the exact hour locally, and the sale carries on from day to day until every parcel has been offered.
  • Mail anything time-sensitive to P.O. Box 440. The office notes that the post office does not deliver to the 311 SE 1st St street address.
  • Property the county takes at resale may be resold later by the treasurer at a price the county commissioners approve, advertised once a week for the three weeks before that sale under 68 O.S. 3135. Harper County keeps no standing county-owned property list online, so ask the treasurer's office what the county is holding.
  • A parcel only reaches the June resale after taxes have been delinquent three years or more, not two, under 68 O.S. 3105.

Oklahoma rules

Redemption
Oklahoma gives the owner a long runway and then a hard stop. Redemption is open from the moment the taxes go delinquent right up to the start of the resale auction, which is three years or more. Once the auction begins, the right is gone: there is no post-sale redemption period, no owner buyback window and no premium for the buyer to collect, which is what separates Oklahoma from a redeemable-deed state such as Texas or Georgia. The single exception is for a person under a legal disability. A minor, or a person who is incapacitated or partially incapacitated, may redeem within one year after the disability ends, and 68 O.S. 3131(A) repeats the same one-year window after removal of the disability. The statute says in terms that incapacity here means mental incapacity only and that physical disability is not covered.
Deed deposit
Oklahoma sets no statewide deposit percentage and no statutory bidder registration. The statute requires payment in cash or certified funds, and permits online payment where the resale is run online. Counties run this as a cash sale with registration in the days before. Comanche County registered bidders from May 26 to June 5, 2026 and again from 8:30 a.m. on sale day, took cash or cashier's check on deposit in trust only through June 2, and told bidders they must have cash in hand at the moment of bidding. Oklahoma County ran the same shape with a wire cutoff of June 4 and a cashier's check cutoff of June 1. Confirm the county's registration window, accepted funds and cutoffs before travelling.
Surplus proceeds
When a parcel sells for more than the taxes, penalties, interest and costs due on it, the treasurer notifies the Oklahoma Tax Commission within 30 days. The Tax Commission has 60 days to report any outstanding state tax liabilities attached to the parcel, whether or not a tax warrant was filed, and the treasurer remits to it the lesser of those liabilities or the excess proceeds. Whatever is left is held in a separate fund for the record owner as of the date the resale began, and may be withdrawn any time within one year. Any assignment of the right to those excess proceeds made on or after the day the resale began is void, which closes the courthouse-steps surplus assignment trade. Money not claimed within the year is credited to the county resale property fund.
Governing statute
Okla. Stat. tit. 68, Article 31 (68 O.S. 3101 et seq.)

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.

See the full Oklahomarules and every county →

Frequently asked questions

Does Harper County, Oklahoma sell tax liens or tax deeds?

Tax deeds. Oklahoma sells no tax lien certificates to investors; the County Treasurer sells the property itself at a public tax sale.

How often does Harper County hold tax deed sales?

Harper County holds its tax deed sale once a year. Second Monday of June each year. Each sale is scheduled and advertised in advance, so check the county's tax deed calendar for the next posted date.

I own a property in this sale. Can I stop it?

Often yes, by paying the overdue taxes, interest, and costs before the deadline. Oklahoma's redemption rule: Until the June resale auction starts; there is no post-sale redemption. Call the Harper County Treasurer as early as possible for your exact payoff and options; deadlines are strict. Free help: lawhelp.org lists legal aid programs, and consumerfinance.gov lists HUD-approved housing counselors.

Where can I find the Harper County tax sale list?

Harper County posts its tax sale list at oktaxrolls.com. Lists go up ahead of each sale and keep changing until the sale date, so confirm every parcel against the county's legal advertisement before you bid.

Verified Aug 31, 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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Compare sale calendars, platforms, and rules across the state, or read the guides before you bid.

Oklahoma tax salesDue diligence guide
Call Harper County Treasurer