Washington County Property Appraiser & Tax Assessor
Real property appraisal records, parcel search lookup, property tax rates, and assessment protest deadlines for Washington County, Oregon.
Washington County Assessor's Office Information
Washington County Appraisal & Assessment Office, Hillsboro, OR 41001
Get Driving Directions ↗Monday - Friday: 8:00 AM - 4:30 PM (Local Time)
Closed on state & federal holidays.
(503) 439-1377
County Tax & Assessment Web Portal
Washington County Property Tax Calculator
Estimated using Washington County's effective tax rate of 1.00% (Assessment ratio: 100%)
Appealing Your Washington County Assessment
December 31 following the mailing of tax statements in October.
Under Oregon property tax law, property owners in Washington County have the legal right to challenge an assessed valuation that exceeds fair market value, is unequally appraised compared to neighboring properties, or contains clerical errors.
Contact the Washington County Assessor's Office to review your property record card, verify square footage, and present recent comparable sales (comps).
If informal review does not resolve the valuation, file a written notice of appeal with the Board of Property Tax Appeals (BOPTA) before the statutory deadline.
Was Your Washington County Home Over-Assessed This Year?
Studies show up to 30% to 60% of US residential properties are overvalued by automated municipal algorithms. Protesting your assessment before the statutory deadline can lower your tax bill by an average of $1,100/year.
Washington County Homestead Exemptions & Tax Relief
Homeowners in Washington County who occupy their home as their permanent primary residence may qualify for property tax reductions under state and local homestead programs:
Measure 50 constitutional amendment created Maximum Assessed Value (MAV), capping annual taxable value growth to 3% per year.
Senior and Disabled Property Tax Deferral program pays property taxes on behalf of qualifying low-income seniors. Disabled veterans receive $23,000 to $27,000 exemption.
Need Deed, Lien, or Title Records for Washington County?
While the Property Appraiser values real estate for taxation, official legal property transfers, warranty deeds, mortgages, and marriage records in Washington County are maintained by the County Clerk & Recorder.
Frequently Asked Questions
Where is the Washington County Property Appraiser office located?
The official Washington County property appraisal and tax assessment office is located at Washington County Appraisal & Assessment Office, Hillsboro, OR 41001. Operating hours are typically Monday - Friday: 8:00 AM - 4:30 PM (Local Time). You can reach the customer service staff by phone at (503) 439-1377.
What is the property tax rate in Washington County, OR?
The average effective property tax rate in Washington County is approximately 1%. For a home with the median county market value of $544.000, the estimated annual property tax is about $5440 per year.
How do I search for a property or parcel in Washington County?
You can look up property record cards, assessed valuations, ownership history, and parcel boundary maps online through the official Washington County parcel search portal: https://washingtoncountyor.gov/assessor/parcel-search.
When is the deadline to appeal my property assessment in Washington County?
Property valuation protests and appeals in Washington County must be submitted by: December 31 following the mailing of tax statements in October. Appeals are formally reviewed and heard by the Board of Property Tax Appeals (BOPTA).
How does the Homestead Exemption work in Washington County?
Measure 50 constitutional amendment created Maximum Assessed Value (MAV), capping annual taxable value growth to 3% per year. Additional exemptions are available for senior citizens (65+) and disabled military veterans (Senior and Disabled Property Tax Deferral program pays property taxes on behalf of qualifying low-income seniors. Disabled veterans receive $23,000 to $27,000 exemption.).