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Oregon · County guide

Washington County, Oregon property tax appeals

A Washington County property tax appeal starts with the Washington County Property Value Appeals Board. The Washington County Property Value Appeals Board opens Oct 25, 2026 and closes Dec 31, 2026. There is no filing fee.

This season

Next deadline
Dec 31, 2026
Opens soon
Washington County Property Value Appeals Board

Opens Oct 25, 2026Closes Dec 31, 2026

Source: ORS Chapter 311: Collection of Property Taxes (Oregon Legislature)Last checked

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Here the check uses your own figures: you enter the assessed value from your notice or tax bill and the year you bought. We compare how much it has grown with the house price index for your area and show the numbers as your figures. You decide and file yourself.

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Filing fee
No filing fee
Where to file first
Washington County Property Value Appeals Board
Office address
155 N First Ave Suite 130 MS #9, Hillsboro OR 97124 · 503-846-3910
Our coverage
Free check available
  • Independent guide — not affiliated with Washington County or any government agency.
Last updated
October 1, 2026
Sources last checked
October 1, 2026
Status
Verified guide

How we verify facts

When and where do I file a Washington County property tax appeal?

Who hears a Washington County appeal?

One stage. We are not affiliated with this office.

Who hears it: Washington County Property Value Appeals Board

Filing: petition

Opens soon

Where is the Washington County office?

Property Value Appeals Board[2]

Fax
503-846-3909

Washington County Property Value Appeals Board[7]

Address
155 N First Ave Suite 130 MS #9, Hillsboro OR 97124

Washington County Department of Assessment & Taxation (Recording Office location)[5]

Address
Charles D. Cameron Public Services Building, 155 N First Avenue, Room 130, Hillsboro, Oregon 97124
Hours
Monday-Friday 8:30 a.m.-4:30 p.m.

We are not affiliated with this office. Hours can change, so call before you visit.

Which Washington County filing windows are coming up?

Washington County filing windows
ClosesAreaWho hears itStatus
Dec 31, 2026 · opens Oct 25, 2026CountywideWashington County Property Value Appeals Board · Official source · Last checked Sep 29, 2026Opens soon

When were past Washington County deadlines?

Past Washington County filing windows
Tax yearWindowOffice
2025Closed December 31, 2025Washington County Property Value Appeals Board
2024Closed December 31, 2024Washington County Property Value Appeals Board
2023Closed January 2, 2024Washington County Property Value Appeals Board

When is the deadline to appeal a property tax assessment in Washington County?

The soonest deadline we list: Washington County, Washington County Property Value Appeals Board — Opens October 25, 2026 · Closes December 31, 2026. Oregon · Property Value Appeals Board: In Oregon, a petition to the county Property Value Appeals Board can be filed from the date the tax statements are mailed through December 31 (postmarked or delivered by then; a weekend or holiday deadline moves to the next business day).

Deadline ruleOregon · Property Value Appeals Board
In Oregon, a petition to the county Property Value Appeals Board can be filed from the date the tax statements are mailed through December 31 (postmarked or delivered by then; a weekend or holiday deadline moves to the next business day).[1]
When a filing counts as on timeWashington County Property Value Appeals Board
Washington County petitions must be postmarked or delivered to the county clerk between late October and December 31 (next business day if December 31 is a weekend or holiday).[2]
Deadline detailAnnouncement status
As of October 1, 2026, Washington County's own appeal page still shows only the 2025 petition deadline; it has not posted 2026-27 dates.[2]

Who decides a property tax appeal in Washington County?

Washington County Property Value Appeals Board: Washington County PVAB decisions can go to the Magistrate Division of the Oregon Tax Court ($50 fee), then the Tax Court's Regular Division and the Oregon Supreme Court. Washington County Property Value Appeals Board: In Washington County, Oregon, an owner appeals a property's valuation by petition to the Property Value Appeals Board (formerly BOPTA).

Appeal stepsWashington County Property Value Appeals Board
Washington County PVAB decisions can go to the Magistrate Division of the Oregon Tax Court ($50 fee), then the Tax Court's Regular Division and the Oregon Supreme Court.[2]
What the appeal is calledWashington County Property Value Appeals Board
In Washington County, Oregon, an owner appeals a property's valuation by petition to the Property Value Appeals Board (formerly BOPTA).[2]

How do I file a property tax appeal in Washington County?

Washington County Property Value Appeals Board: Washington County PVAB petitions are returned to 155 N. First Ave., Suite 130-MS9, Hillsboro, OR 97124, or emailed to AT_PropertyValueAppealsBoard@Washingtoncountyor.gov. Washington County Property Value Appeals Board: Washington County charges no fee to file a Property Value Appeals Board appeal.

How to fileWashington County Property Value Appeals Board
Washington County PVAB petitions are returned to 155 N. First Ave., Suite 130-MS9, Hillsboro, OR 97124, or emailed to AT_PropertyValueAppealsBoard@Washingtoncountyor.gov.[2]
Filing feeWashington County Property Value Appeals Board
Washington County charges no fee to file a Property Value Appeals Board appeal.[2]
Who may fileWashington County Property Value Appeals Board
Washington County PVAB hearings are informal; owners can sign and represent themselves or authorize certain persons listed on the petition form.[2]
HearingsWashington County Property Value Appeals Board
Washington County PVAB hearings run from the first Monday in February through April 15; you can attend or let the board decide on your petition.[2]
HearingsWashington County Property Value Appeals Board · Location
Washington County PVAB hearings (typically February-March) are held by Zoom or phone and in person at the Public Services Building, 155 N First Ave., Room 120 D-Board Workroom, Hillsboro; all hearings are recorded.[3]

Upcoming appeal deadlines in every county we track

What evidence counts in Washington County, and can the value go up?

What evidence can I use in Washington County?

Washington County Property Value Appeals Board · Current year: Washington County's PVAB can hear only current-year value appeals, not prior years.

Evidence ruleWashington County Property Value Appeals Board · Current year
Washington County's PVAB can hear only current-year value appeals, not prior years.[2]

Which Oregon rules apply in Washington County?

These rules are the same in every Oregon county. Each link opens the rule on the Oregon page.

What do Washington County property taxes and assessments look like?

Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.

How much could a lower assessment save on Washington County property taxes?

Tax rate used: $18.04 per $1,000 of assessed value (county average, fiscal 2025-26).

How much could a lower assessment save on Washington County property taxes?
ExampleTax saved
$10,000 less assessed value$180 a year

These are examples: the tax rate times a lower assessed value. Exemptions, credits, caps and phase-ins can make the real change smaller. This is not a prediction for any home. Rate source: Oregon Property Tax Statistics, Fiscal Year 2025-26 (Oregon DOR 150-303-405).

What do homeowners in Washington County pay in property tax?

The median owner-occupied home in Washington County was worth $588,000, and the median property tax its owners paid was $4,929 a year, according to the Census Bureau's American Community Survey.

Median home value
$588,000
Margin of error ±$4,727.
Median property tax paid per year
$4,929
Margin of error ±$44.
Median tax as a share of median value
0.84%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
143,230
Margin of error ±2,017.

These are survey estimates of what owners reported about their own homes. They are not assessed values, not tax rates, and not an opinion of what any home is worth.

They cannot tell you whether your own assessment is fair. That takes a comparison with similar homes, which we offer only in counties we have researched.

From the county's assessment and appeal records

Homes in the county's assessment records
164,890
Median assessed value
$567,910
Middle half of assessed values
$473,380 to $698,390

Source: The county's open assessment data, aggregated by us (tax year 2025 final values). Our calculation from public records; not an opinion of any home's value.

How Washington County home assessments are spread

Assessed values of 164,890 homes in the property classes our free check covers (RES, SFR, MFR, RUR), tax year 2025 final values. Half are between $473,380 and $698,390; the median is $567,910. The last bar holds everything above it.Source: Assessment records from the county's open data (tax year 2025 final values), retrieved Sep 27, 2026; our calculation.

Median home value: Washington County compared

  1. Washington County$588,000
  2. Typical Oregon county$388,050
  3. Typical US county$185,300

Washington County $588,000; Typical Oregon county $388,050; Typical US county $185,300

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 36 in Oregon and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077.

Median property tax paid: Washington County compared

  1. Washington County$4,929
  2. Typical Oregon county$2,587
  3. Typical US county$1,619

Washington County $4,929 a year; Typical Oregon county $2,587 a year; Typical US county $1,619 a year

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 36 in Oregon and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25103.

Median home assessment by map book

  1. Map book 009$909,090
  2. Map book 128$898,710
  3. Map book 008$855,250
  4. Map book 007$847,735
  5. Map book 057$819,870
  6. Map book 058$775,210
  7. Map book 060$760,570
  8. Map book 065$755,160
  9. Map book 052$397,375
  10. Map book 102$323,860
  11. Map book 083$318,940
  12. Map book 116$252,465
  13. Map book 117$251,580
  14. Map book 126$250,720
  15. Map book 103$201,800
  16. Map book 136$184,780

The 8 highest and 8 lowest of 152.

Median assessed value by map book: highest Map book 009 ($909,090), lowest Map book 136 ($184,780).

Median assessed value of homes in the property classes our free check covers (RES, SFR, MFR, RUR) for each map book with at least 50 such homes, tax year 2025 final values.Source: Assessment records from the county's open data (tax year 2025 final values), retrieved Sep 27, 2026; our calculation.

Washington County filing windows on a calendar

  1. Washington County Property Value Appeals BoardDec 31, 2026 · Opens soon

The dashed line marks today.

Washington County Property Value Appeals Board: Dec 31, 2026

Each bar is a filing window from its opening day to its last day. Forecasts show the expected closing range and are not official dates.Source: the official calendars and rules cited in the sources list below.

How often is property reassessed in Washington County?

Exceptions: In Washington County, changes such as additions, major remodeling, new construction, rezoning or subdivision can raise the assessed value beyond the usual limit. Washington County's Real Market Value is the appraiser's estimate of the sale price as of January 1.

Reassessment cycleExceptions
In Washington County, changes such as additions, major remodeling, new construction, rezoning or subdivision can raise the assessed value beyond the usual limit.[2]
Valuation date
Washington County's Real Market Value is the appraiser's estimate of the sale price as of January 1.[2]
Level of assessment
In Washington County, Oregon, the assessed value is the lower of the real market value and the Measure 50 maximum assessed value.[2]

What do home values and property taxes look like in Washington County?

County average rate: In fiscal 2025-26, property taxes in Washington County averaged $18.04 per $1,000 of assessed value (all property, county-wide).

Property tax rateCounty average rate
In fiscal 2025-26, property taxes in Washington County averaged $18.04 per $1,000 of assessed value (all property, county-wide).[4]

Homes in Washington County

From the Census Bureau's American Community Survey: how old the homes are, what kind they are, what owners say they are worth and the property taxes they pay. These figures describe all homes together, not any one home.

Median year built
1990
All housing units, owned and rented
Single-family houses, detached or attached
66%
of 243,278 housing units
Owned homes with a mortgage or similar loan
71%
of 143,230 owner-occupied homes

Home values reported by owners

  1. Less than $50,0002%
  2. $50,000 to $99,9991%
  3. $100,000 to $199,9991%
  4. $200,000 to $299,9994%
  5. $300,000 to $399,9998%
  6. $400,000 to $499,99919%
  7. $500,000 to $749,99942%
  8. $750,000 to $999,99916%
  9. $1,000,000 to $1,999,9996%
  10. $2,000,000 or more1%

Home values reported by owners in Washington County: Less than $50,000 2%; $50,000 to $99,999 1%; $100,000 to $199,999 1%; $200,000 to $299,999 4%; $300,000 to $399,999 8%; $400,000 to $499,999 19%; $500,000 to $749,999 42%; $750,000 to $999,999 16%; $1,000,000 to $1,999,999 6%; $2,000,000 or more 1%.

Share of owner-occupied homes in each value range. Owners give this value in the survey; it is not the assessed value.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25075.

Property taxes owners pay a year

  1. No real estate taxes3%
  2. Less than $8001%
  3. $800 to $1,4992%
  4. $1,500 to $1,9992%
  5. $2,000 to $2,9997%
  6. $3,000 or more84%

Property taxes owners pay a year in Washington County: No real estate taxes 3%; Less than $800 1%; $800 to $1,499 2%; $1,500 to $1,999 2%; $2,000 to $2,999 7%; $3,000 or more 84%.

Share of owner-occupied homes by the real estate taxes paid in a year, with or without a mortgage.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25102.

Source: U.S. Census Bureau, American Community Survey (2020–2024 5-year estimates, tables B25075, B25102, B25035, B25024 and B25081), retrieved Oct 1, 2026. Survey estimates have a margin of error.

More questions about Washington County property tax appeals

When is the Washington County property tax appeal deadline?

The Washington County Property Value Appeals Board window opens October 25, 2026 and closes December 31, 2026. In Oregon, a petition to the county Property Value Appeals Board can be filed from the date the tax statements are mailed through December 31 (postmarked or delivered by then; a weekend or holiday deadline moves to the next business day).[1][8]

Is there a fee to file a property tax appeal in Washington County?

Washington County charges no fee to file a Property Value Appeals Board appeal.[2]

Where do I file a property tax appeal petition in Washington County?

Washington County PVAB petitions are returned to 155 N. First Ave., Suite 130-MS9, Hillsboro, OR 97124, or emailed to AT_PropertyValueAppealsBoard@Washingtoncountyor.gov.[2]

Can my assessed value go up if I appeal in Washington County?

The same Oregon rule applies in every county.[1] Read the Oregon rule

Property tax guides for Washington County homeowners

Counties next to Washington County

Oregon property tax appeals: all counties

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Where do these facts come from?

  1. [1]ORS Chapter 309: Property Value Appeals Boards (Oregon Legislature)Statute or regulation · last checked Sep 27, 2026
  2. [2]Property Value Appeals | Washington County, OROfficial guide or FAQ · last checked Oct 1, 2026
  3. [3]PVAB Appeals Hearings | Washington County, OROfficial guide or FAQ · last checked Oct 1, 2026
  4. [4]Oregon Property Tax Statistics, Fiscal Year 2025-26 (Oregon DOR 150-303-405)Official notice, form, calendar or rules · last checked Sep 27, 2026
  5. [5]Washington County Recording Office | Washington County, OROfficial guide or FAQ · last checked Oct 1, 2026
  6. [6]Washington County Public Access > HomeOfficial guide or FAQ · last checked Oct 1, 2026
  7. [7]Property Value Appeals Board contact information by county (Oregon Department of Revenue)Official guide or FAQ · last checked Sep 27, 2026
  8. [8]ORS Chapter 311: Collection of Property Taxes (Oregon Legislature)Statute or regulation · last checked Sep 30, 2026
  9. [9]Form OR-B-RPP Instructions, Oregon Property Value Appeals Board Real Property Petition (Oregon DOR 150-310-063-1, Rev. 07-22-26)Official notice, form, calendar or rules · last checked Sep 27, 2026
  10. [10]ORS Chapter 307: Property Subject to Taxation; Exemptions (Oregon Legislature)Statute or regulation · last checked Sep 30, 2026
  11. [11]2025-26 Property Tax Statement | Washington County, OROfficial guide or FAQ · last checked Oct 1, 2026
  12. [12]2024-25 Property Tax Statement | Washington County, OROfficial guide or FAQ · last checked Oct 1, 2026
  13. [13]2023-24 Property Tax Statement | Washington County, OROfficial guide or FAQ · last checked Oct 1, 2026
  14. 14.County open data: washington assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  15. 15.County open data: washington assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  16. 16.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Washington County, Oregon
  17. 17.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — Washington County, Oregon
  18. 18.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Washington County, Oregon

Data credits: Portland-area data: Metro RLIS · Census ACS (public domain) · Census county adjacency (public domain)

Not affiliated with Washington County or any government agency. Not legal advice. Not an appraisal.

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