Washington County Property Tax Records

Washington County property tax records cover parcels in Bartlesville and the surrounding communities of northeastern Oklahoma. Assessor Steve Campbell appraises all taxable real and personal property in the county based on fair cash value and highest and best use. Property taxes in Washington County support schools, vo-techs, the county general fund, and cities. This page explains how to search Washington County property tax records online, which offices to contact, and what deadlines apply to property owners in the county.

Washington County Assessor - Property Valuation

Assessor Steve Campbell manages all property valuation for Washington County. The assessor's office is at 400 S. Johnstone, Ste 300, Bartlesville, OK 74003, and the phone is (918) 337-2830. The assessor's website is at washingtoncountyok.gov/assessor. The assessor appraises all taxable real and personal property in the county. Valuation is based on fair cash value at highest and best use, as required by Oklahoma Title 68. Real property is assessed at 11% of that value.

The assessor's site notes that taxes support schools, vo-techs, the county general fund, and cities. Washington County has a mix of residential properties in Bartlesville, agricultural land in the rural areas, and some industrial and commercial parcels. Bartlesville is the major urban center and has a range of property types from older single-family homes to commercial buildings. Outside the city, the county has substantial oil and gas activity, and mineral interests are taxable personal property.

Washington County property owners who receive an assessment notice showing an increase have the right to protest. File with the County Board of Equalization within 15 days of the notice. An informal review with the assessor's office is a good first step. Bring documentation: a recent independent appraisal, comparable sales data, or evidence of errors in the property description. The statewide assessor portal at okassessor.com links to Washington County for free basic assessment and ownership data.

The image below is from the Washington County Assessor's official website at washingtoncountyok.gov/assessor, which provides property appraisal information and resources for Bartlesville and the rest of the county.

The Washington County Assessor's site covers appraisal methods, property tax education funding, and how fair cash value at highest and best use is determined for all county parcels.

Washington County Treasurer - Tax Collection

The Washington County Treasurer manages all property tax collection for the county. The treasurer serves as chief financial officer and is sometimes described as the "County Bank." The tax roll portal for Washington County is at oktaxrolls.com/county/washington. You can use this portal to look up tax accounts, check current balances, and pay online. Oklahoma property taxes may be paid in full or in two installments.

The payment schedule follows the statewide Oklahoma standard. The first half or full amount is due by December 31. The second half is due by March 31. Taxes not paid by December 31 become delinquent on January 1. Under Oklahoma Statute Section 68-2817, interest accrues at 1.5% per month on any delinquent balance. The county holds an annual tax resale on the second Monday of June for properties with long-standing unpaid balances.

Exemptions and Property Tax Relief in Washington County

Oklahoma's homestead exemption reduces the assessed value of your primary residence by $1,000. File with the Washington County Assessor between January 1 and March 15. The exemption renews automatically as long as your ownership and residency do not change. Veterans with 100% service-related disability may qualify for a full property tax exemption. Senior citizens who meet income thresholds may also qualify for additional relief under the Senior Valuation Freeze program, which locks the assessed value of qualifying homestead properties.

Washington County has active oil and gas production, and mineral rights can be taxable personal property. If you own mineral interests in Washington County, contact the assessor's office to confirm whether those interests are on the tax rolls. Business personal property is reported on Form 901, filed with the assessor between January 1 and March 15 each year. Missing this deadline can result in a late filing penalty added to the assessment.

For a full overview of exemptions, the Oklahoma Tax Commission at tax.ok.gov maintains current forms and guidance for all Oklahoma counties. The statewide tax roll search at oktaxrolls.com covers Washington County for online payments and balance lookups. The DataCrosspoint platform at datacrosspoint.com provides GIS mapping and historical assessment data for Washington County parcels.

Cities in Washington County

Washington County includes Bartlesville as its primary city. All property tax accounts within the county are handled by the Washington County Assessor and Treasurer.

Other communities in Washington County include Dewey, Copan, Ramona, and Ochelata. All property within the county boundary is assessed and taxed through the Washington County Assessor and Treasurer in Bartlesville.

Nearby Counties

Washington County is in northeastern Oklahoma. The following counties border it and each handles its own property tax records.