Washington County Oregon Tax Assessment Search & Records

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Washington County, Oregon · InterMap · RMV · MAV · Assessed Value · Property Tax Records

Search the Washington County Property Record and Trace the Value to the Tax Bill

Washington County’s property search works differently from the owner-name portals used by many other states. The county directs property owners to InterMap, where you can locate a parcel by situs address, Taxlot ID or R number and open its Assessment & Taxation report.

The record separates Oregon’s three values—Real Market Value, Maximum Assessed Value and Assessed Value—and can also lead you to sales, deed, improvement, tax-lot and property-tax information. Understanding those fields is the key to knowing whether you have a search problem, a value problem or simply a tax-bill question.

Get the quick answer Search InterMap Decode RMV, MAV & AV
Washington County location check: this guide is for Washington County, Oregon, including Hillsboro, Beaverton, Tigard, Tualatin, Forest Grove, Cornelius, Sherwood and surrounding county areas. It is not the Washington County, Ohio property system or Washington state.

Quick answer: search InterMap, then open “Assessment & Taxation Information”

Use Washington County’s official InterMap. Search by Situs Address, Taxlot ID or R number/property account number. After the map locates the parcel, scroll to Additional Information and open the Assessment & Taxation Information subreport.

1 Find the taxlot Address, Taxlot ID or R number.
2 Verify the parcel Match location and account information.
3 Open the report Assessment & Taxation Information.
4 Finish the task Value, tax, payment, deed or appeal.
Official search InterMap
Search keys Address · Taxlot · R number
RMV date January 1
Assessed value Lower of RMV or MAV
MAV growth Generally limited to 3%
Appraisal 503-846-8826
Property taxes 503-846-8801
PVAB appeals 503-846-3854
Cartography 503-846-8871
Recording 503-846-8752
Open official InterMap Read County search instructions

Choose the Washington County property task you need to finish

Parcel search, value review, tax payment, deed research and boundary questions all use different parts of the county system.

Use the correct office

Washington County combines assessment and taxation, but not every record question belongs to the same team

APP
APPRAISAL RMV
MAV / AV
Property facts
MAP
CARTOGRAPHY Taxlots
Ownership display
Assessor maps
$
TAX COLLECTION Tax bill
Payment
Delinquency
REC
RECORDING Deeds
Recorded documents
Copies
PVAB
VALUE APPEALS Current value
Petition
Hearing
Washington County property question → correct starting point
Your question
Start here
Contact
Important limit
What values are on my property account?
InterMap + Appraisal
503-846-8826
RMV, MAV and AV mean different things.
How much property tax do I currently owe?
Property tax portal / Tax Collection
503-846-8801
Do not calculate a payoff from assessed value alone.
The online owner information looks wrong.
Cartography
503-846-8871
Assessment ownership records are maintained for tax purposes.
I need the actual deed or recorded document.
Recording
503-846-8752
InterMap is not a complete title search.
I think the current value is too high.
Appraisal → PVAB
503-846-8826 / 503-846-3854
PVAB decides value, not whether the tax bill feels too high.
What InterMap can show

The assessment report contains more than one property value

Washington County specifically identifies five groups of property information available through InterMap. Use the section that answers your question rather than treating the map itself as the complete record.

General Property Information Account, taxlot and general parcel details.
Sales / Deed Information Transfer and deed-reference information associated with the assessment record.
Assessed Values The value history needed to compare RMV, MAV and AV.
Improvement Information Building or improvement characteristics used in assessment work.
Improvement Details More detailed information about taxable improvements on the account.
What to verify before relying on a Washington County property record
Record item
Why check it
What a mismatch may mean
Situs address
Confirms that you selected the intended property.
Wrong result, rural addressing issue or recent parcel change.
R number
Links the property to its tax account.
You may be looking at a different tax account or separate improvement account.
Taxlot ID
Connects the record to mapping and land research.
Split, consolidation, map update or selection error.
Land / improvements
Physical characteristics affect RMV.
Appraisal data may need review or a recent change may not yet be reflected.
Sales / deed data
Provides transfer context.
The recorded deed may be newer than the assessment display.
Value year
Prevents comparison of different tax years.
A prior-year value may look wrong when compared with the current statement.
R number vs Taxlot ID

Do not treat the property account number and Taxlot ID as the same identifier

R number / Property Tax Account Best identifier for tax statements, payment questions and the tax-account side of Washington County records.
Taxlot ID Best identifier for InterMap, assessor maps and parcel-location research.
Situs Address Best human-friendly starting point, but verify the R number and Taxlot ID before relying on the result.
Best workflow: search by the information you already know, then write down both the R number and Taxlot ID. Those two identifiers make later calls to Appraisal, Tax Collection, Cartography or Recording much easier.
Oregon property-value system

RMV, MAV and AV are three different numbers

Real Market Value — RMV Washington County describes RMV as the assessor’s estimate of the price the property would sell for as of January 1. Think: market estimate.
Maximum Assessed Value — MAV Oregon’s Measure 50 system places a limit on taxable value growth. MAV generally cannot rise more than 3% per year unless a qualifying exception applies. Think: assessment ceiling.
Assessed Value — AV Oregon taxes the property on the lower of RMV or MAV. That lower figure becomes the assessed value used in the tax calculation. Think: taxable assessed value.
Washington County / Oregon value terms
Term
Plain-English meaning
Can it change?
Common mistake
RMV
Assessor’s estimate of market value as of January 1.
Can rise or fall with market and property conditions.
Assuming RMV is automatically the taxable value.
MAV
Measure 50 assessment limit associated with the property.
Generally limited to 3% annual growth, but exceptions can add value.
Assuming every assessment can increase only 3%.
AV
Lower of RMV or MAV.
Changes when the lower controlling value changes.
Calling AV the current market value.
Compression
Reduction required when certain constitutional tax-rate limits are reached.
Depends on RMV, AV and taxing-district levies.
Assuming a 3% MAV limit guarantees the tax bill cannot rise more than 3%.
The “3% rule” is commonly misunderstood. It generally limits annual growth of MAV—not RMV, not every property-tax charge and not necessarily the total tax bill. New construction, improvements, subdivision/partition and other statutory exceptions can affect MAV, and changes in levies or compression can change taxes.
Quick AV check

Use the lower of RMV or MAV to understand the assessed value

RMV / MAV / AV calculator

Enter the Real Market Value and Maximum Assessed Value shown on the property record. The calculator returns the lower figure as the basic Assessed Value.

This does not calculate an official tax bill and does not account for exemptions, special assessments, new-property exceptions, compression or taxing-district rates.

RMV entered $700,000
MAV entered $420,000
Basic AV $420,000

Basic rule: AV = the lower of RMV or MAV.

Tax statement records

The Washington County tax statement connects the assessment to the actual bill

Once you need the amount due rather than the value itself, move from InterMap to Washington County’s property-tax system. The tax statement includes the property address, legal-description information, map/account number, ownership mailing information, comparative values, taxing districts, payment options and delinquent taxes when applicable.

What to read on a Washington County property tax statement
Statement section
What it answers
Why it matters
Key Property Data
Address, legal description, map and account number.
Use this information when calling Assessment & Taxation.
Ownership / Mailing Address
Who receives the tax statement.
A mailing-address issue does not change the owner’s responsibility to pay.
Comparative Tax Values
Current and prior RMV / taxable value information.
This is where value changes become visible.
Taxing Districts
Where the property-tax dollar is allocated.
Explains why two nearby properties can have different taxes.
Payment Options
Full or installment amounts and applicable discount.
Use the printed current-year dates rather than an old article.
Delinquent Taxes
Prior-year balances and foreclosure indicators.
Payments are applied to older delinquent taxes first.
Open Washington County tax portal See the official sample tax statement
Green vs yellow tax statement: Washington County explains that a green statement generally indicates the property owner is expected to pay the bill. A yellow statement can indicate that a mortgage company requested the bill or that the Oregon Department of Revenue is involved through the Senior/Disabled Tax Deferral Program. If you recently bought, sold or refinanced, confirm the payment arrangement with the lender.
Property tax payment

Washington County accepts online, phone, mail, in-person and drop-box payments

Property taxes can normally be paid in full or in three installments. Oregon’s regular schedule centers on November 15, February 15 and May 15, with the official statement controlling when a date shifts because of a weekend or holiday.

Pay in full Full timely payment by the first due date normally receives a 3% discount.
Pay two-thirds Oregon provides a 2% discount on the portion paid under the qualifying two-thirds option.
Pay in thirds Use the installment amounts and dates printed on the current tax statement.
Past due Interest accrues on delinquent amounts. Verify the live balance rather than sending an old installment figure.
Current Washington County payment methods and fees
Method
Current fee / rule
Important step
Electronic check
$0.95 convenience fee
Confirm routing and checking-account numbers carefully; processing can take 7–10 days.
Debit / credit card
2.45% convenience fee, $1.50 minimum
Review the final total before submitting.
Phone
Same payment-method fees apply
Call 1-888-510-9274 and retain the confirmation number.
Mail
Check or money order
Make payment to Washington County and include the property tax account number.
In person
Cash, check, money order or card; card fee applies
Use 155 N First Ave, Suite 130, Hillsboro.
Drop box
No card-processing fee when paying by approved check/money order
County has indoor and outdoor drop boxes at the Public Services Building.
Electronic-check warning: submitting an online electronic check confirms that the payment information was captured; it does not guarantee the bank transaction will succeed. A bad routing/account number can cause the payment to be returned and may cost you a discount or trigger interest after the deadline.
Review current payment methods Open tax account / payment portal
2026 value appeal

For the 2026 tax year, value appeals go to Washington County’s Property Value Appeals Board

Oregon now refers to the local board as the Property Value Appeals Board (PVAB), formerly the Board of Property Tax Appeals. In the normal appeal route, you file after the tax statement is mailed and no later than December 31. Because December 31, 2026 is a weekday, the ordinary 2026 deadline is December 31, 2026.

Washington County filing fee: the County states that there is no fee to file a property-value petition with its Property Value Appeals Board.

Talk to Appraisal before filing when the issue may be explainable or correctable

Open the InterMap assessment report Save the R number, Taxlot ID, RMV, MAV, AV and relevant improvement details.
Identify the exact issue Separate a factual property error from a disagreement about market value.
Call Appraisal at 503-846-8826 Ask how the property was valued and whether a factual issue can be reviewed before a formal petition.
Build evidence around January 1 value The appeal should address the property’s value for the applicable assessment date—not simply the amount of tax.
File the current PVAB petition by the deadline Use the current County form and submission instructions. Do not reuse an old-year petition.

Evidence Washington County identifies as useful

Recent relevant property sale
Fee appraisal
Comparable sales of similar properties
Construction-cost evidence
Cost-of-repair evidence
Photographs supporting condition issues
Rental data for income property
Expense data for income property
PVAB reviews value—not the size of your tax bill. A property can have an accurate assessment and still have a tax bill you consider high because tax rates, voter-approved levies and other charges are separate issues.
Washington County PVAB appeal page Oregon DOR property-tax appeals
Useful appraisal call script “I’m reviewing Washington County account [R number] / taxlot [ID]. The record shows RMV of [amount] and AV of [amount]. I believe [specific property fact or market value] may be wrong because [sale, appraisal, comparable, repair or income evidence]. Can you explain the valuation and whether I should file a PVAB petition?”
Ownership and recorded records

InterMap deed information is useful research, but the recorded document controls the deed question

Washington County includes sales and deed information in its assessment system, but a parcel record is not a title report. When you need an actual deed, recorded instrument or certified document trail, move to the Recording Division.

Recent sale still shows an older owner? Verify the recorded document first, then contact Cartography if the assessment ownership display needs to be updated.
Name changed after marriage, death or court action? Follow the County’s ownership-record correction process and provide the documentation required for that type of change.
Need the legal deed? Request the actual recorded document from Washington County Recording rather than printing the InterMap owner display.
Parcel recently split or changed? Cartography updates assessor maps after deeds, plats and other required documents are recorded.
Washington County Recording Cartography & ownership corrections
Taxlot maps and surveys

Use InterMap for taxlot context—not for staking a property boundary

InterMap is the County’s property/tax-lot information and mapping research tool. It is useful for identifying the parcel, viewing assessor-map context and moving into assessment data.

InterMap Use for property/taxlot location, assessor maps and Assessment & Taxation information.
Survey Explorer Use for County Surveyor records such as surveys, plats, public land corners, section maps and related survey material.
Professional survey Use when the exact legal boundary must be established on the ground.
Boundary warning: Washington County says assessor-map boundaries are maintained for property-tax purposes. Do not place a fence, building, driveway or other improvement solely from an online taxlot line.
Open InterMap Washington County GIS tools
Failed-search recovery

If the Washington County property record does not look right, troubleshoot the identifier first

Address finds no parcel? Try the Taxlot ID or R number from a tax statement, deed or other county document.
Several nearby taxlots appear? Match the situs address and R number before opening Assessment & Taxation Information.
Vacant land has no useful street address? Search by Taxlot ID or identify the parcel spatially in InterMap.
Recent deed is not reflected? Verify Recording first, then contact Cartography about the assessment ownership display.
Building details look outdated? Save the specific field and contact Appraisal rather than assuming the entire account is wrong.
Tax amount differs from your calculation? Use the live tax account. Levies, compression, special assessments, discounts and delinquency can all affect the final amount.
Map boundary looks wrong? Compare the assessor map with recorded deed/plat and survey records. Do not redraw the legal boundary from InterMap.
Property is in Beaverton, Hillsboro or another city? County assessment and tax records still come through Washington County, while zoning and permit questions may belong to the city.
Washington County office

Assessment & Taxation contact information in Hillsboro

Department of Assessment & Taxation

Building Charles D. Cameron Public Services Building
Address
155 N First Avenue, Suite 130, Hillsboro, OR 97124
Lobby hours Monday–Friday, 8:30 a.m.–5:00 p.m., excluding holidays
Appraisal 503-846-8826
Property taxes 503-846-8801
PVAB 503-846-3854
Cartography 503-846-8871
Recording 503-846-8752
Special programs 503-846-8741
Assessment & Taxation Office hours & directions
10 Washington County Oregon answers

Washington County Oregon tax assessment search and records FAQs

1. Where do I search Washington County, Oregon property assessments?

Use Washington County’s official InterMap property and tax-lot mapping tool. Search by Situs Address, Taxlot ID or R number, then open the parcel and select “Assessment & Taxation Information” under Additional Information.

2. Can I search Washington County property records by owner name?

The County’s published InterMap instructions emphasize searches by Situs Address, Taxlot ID or R number/property account number. If you are starting with an owner name, first identify the parcel through the appropriate county record or recorded-document source and then use the parcel identifiers in InterMap.

3. What is an R number in Washington County, Oregon?

The R number is the property’s tax account number. It is useful for connecting the assessment record with the tax statement and payment system. Keep it together with the Taxlot ID when researching a property.

4. What is the difference between RMV, MAV and AV in Washington County?

RMV is the assessor’s estimate of Real Market Value as of January 1. MAV is the Maximum Assessed Value limit under Oregon’s Measure 50 system. AV is generally the lower of RMV or MAV and is the assessed value used in the property-tax calculation.

5. Can my Washington County property taxes increase by more than 3% in a year?

Yes. The 3% rule generally limits annual growth of Maximum Assessed Value, not Real Market Value or the total tax bill. New property, improvements, subdivisions, voter-approved levies, compression changes and other factors can affect the final tax.

6. Where can I see Washington County property tax bills and payment information?

Use the Washington County property-tax portal at washcotax.org and the County’s tax-payment pages. The tax statement shows the account number, comparative values, taxing districts, payment options, discounts and delinquent taxes when applicable.

7. What are Washington County’s current online property-tax payment fees?

Washington County currently lists a $0.95 convenience fee for electronic-check payments and a 2.45% convenience fee for debit or credit cards, with a $1.50 minimum card fee. Verify the amount shown before submitting the payment.

8. How do I appeal a Washington County, Oregon property value in 2026?

First review the property with the Appraisal Division if helpful, then file a current Property Value Appeals Board petition after the tax statement is mailed and by December 31, 2026. Washington County states that there is no filing fee for a PVAB property-value appeal.

9. What should I do if InterMap shows the wrong owner after a recent sale?

Confirm that the deed was recorded, then contact Washington County Cartography at 503-846-8871 about the assessment ownership record. County ownership information is maintained for property-tax purposes and should not replace recorded deed research.

10. Can I use a Washington County InterMap taxlot line as my legal property boundary?

No. Washington County maintains assessor-map boundaries for property-tax purposes. Use the recorded deed or plat, County Surveyor records and a professional survey when an exact legal boundary must be established.

Official sources used for this Washington County, Oregon guide

Independent property-information guide: CountyAuditors.org is not Washington County, the Washington County Department of Assessment & Taxation, Property Value Appeals Board, Oregon Department of Revenue or any city within Washington County. InterMap and assessment records are useful research tools but do not replace a recorded deed, legal survey, official tax payoff, appraisal or legal advice. Verify current values, payment balances, fees, appeal deadlines and recorded property information with the responsible government office before acting.
Ohio Auditor Tools · Tax Year 2026

10 Ohio Property Tax Calculators & Auditor Tools

Built specifically for Ohio's 35% assessment ratio, current DTE forms, and 2026 Homestead, Owner-Occupancy, CAUV, Conveyance Fee, and Board of Revision rules. Every number reflects verified Ohio Department of Taxation amounts.

Homestead: $29,000 Enhanced Vet: $58,000 OAGI limit: $41,000 Assessment: 35% of market BOR filing: Free · DTE 1

Annual Tax Bill Estimator

OHIO

Applies Ohio's 35% assessment ratio plus your county's effective millage tier — the actual math your auditor uses.

Pick a county tier and enter your market value.

Homestead Reduction Calculator

DTE 105A

2026 Ohio Homestead: $29,000 general or $58,000 enhanced (100% disabled vet, KIA spouse). OAGI under $41,000 required for non-veteran applicants.

Pick your situation and enter your home value.

Owner-Occupancy & Non-Business Credits

DTE 105C

Every Ohio owner-occupied home qualifies for the 2.5% Owner-Occupancy Credit plus the automatic 10% Non-Business Credit. Most owners don't realize these stack.

Enter your annual tax to see both credit amounts.

Conveyance Fee Calculator

ORC 322

When you sell or transfer Ohio property, the auditor collects $1 state + up to $3 county per $1,000, plus $0.50 per parcel. Counties choose their rate.

Enter sale price and pick your county rate.

CAUV Agricultural Savings

DTE 109

Ohio's Current Agricultural Use Value cuts taxable value dramatically for farmland (10+ acres, or smaller with $2,500+ annual gross income).

Enter both market and CAUV values to see savings.

Mill Rate Converter

Ohio tax rates appear three ways on auditor sites: mills, percent, or dollars per $1,000. Convert between them instantly.

Enter a rate to see all three forms.

Parcel Number Cleaner

Ohio's 88 counties each format parcels differently — Franklin uses 010-123456-00, Cuyahoga uses 001-23-456, Hamilton uses 100-0001-0001-00. Auto-detects.

Paste any Ohio county parcel to format it.

35% Ratio Sanity Check

Ohio law sets taxable value at 35% of market value. If yours is significantly higher, you're a strong BOR appeal candidate.

Enter both values to compare against Ohio's 35% target.

BOR Appeal Savings

DTE 1

A successful Board of Revision complaint typically cuts your value 10–20%. Filing is free and stays in effect until the next reappraisal.

Enter your tax bill and reduction estimate.

BOR Deadline Countdown

MAR 31

Ohio's statutory Board of Revision filing deadline is March 31 for the prior tax year. Miss it and you wait until next year — no extensions.

Set your deadline to start the countdown.

Verify with the official Ohio source

These calculators use the verified 2026 Ohio Department of Taxation amounts and statutory rules. For your exact bill, exemption status, and county-specific deadlines, always confirm with your county auditor and the Ohio Revised Code:

Ohio Dept. of Taxation — Real Property DTE Forms (105A, 105C, 1, 109) ORC 5715 — Board of Revision ORC 5713 — Taxable Real Property ORC 322.02 — Conveyance Fee ORC 319.54(F)(3) — State Fee ORC 5713.30 — CAUV tax.ohio.gov — Main Portal

Estimates use Ohio's 35% statutory assessment ratio and effective tax rate tiers averaged across major Ohio counties. Your actual bill depends on local school levies, voted millage, inside vs. outside millage splits, House Bill 920 reduction factors (HB 920), and special assessments. The 2026 Homestead general amount ($29,000) and enhanced amount ($58,000) reflect HB 187 inflation indexing — your county auditor's office may show slightly different transitional figures. Nothing here is legal or tax advice. CountyAuditors.org is an independent informational directory, not affiliated with any county government.

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