King County WA Parcel Lookup, Assessor Reports, Tax Statements and Deed Search Help
Use official King County, Washington resources to search assessor property records, check parcel details, open eReal Property reports, review valuation information, look up property tax statements, pay taxes, search recorded documents and understand the assessment appeal process.
If you are searching for King County Property Assessor records, start with the King County Parcel Viewer or Assessor property information tools. Parcel Viewer helps you search by address, parcel number, condo name or map location, then gives direct links to Assessor reports and parcel-related information.
Use King County Treasury Operations for property tax statements, payment options and tax account questions. Use the King County Recorder’s Office for recorded documents such as deeds, mortgages, plats, surveys and other official property recordings.
🏠 Search parcels and assessor records
Use this for: address search, parcel number search, map-based parcel lookup, condo name search, parcel summary and eReal Property report access.
Best official path: open King County Parcel Viewer and search by address or parcel number, then use the report links shown in the parcel result.
Search tip: if your address fails, try the street number and street name only, or zoom into the map and click the parcel directly.
King County Property Records Quick Facts Before You Search
King County property research works best when you start with the parcel. Parcel Viewer can search by address, parcel number, condo name or map location and then connect you to Assessor reports and parcel-related details.
For property taxes, use King County Treasury Operations. For recorded documents, use the Recorder’s Office. For assessment appeals, use the Board of Appeals and Equalization. These offices are related, but each one answers a different user problem.
What This King County Property Search Guide Covers
How to Search King County Assessor Property Records Online
Start with King County Parcel Viewer when you need parcel-level property information. It allows address search, parcel number search, condo name search and map-based parcel selection. When you select a parcel, you can open linked reports such as the Assessor’s eReal Property report.
This is usually easier than going directly to a tax or deed search because one correct parcel number can help you match tax statements, recorded documents and assessment information across different systems.
Open the official Parcel Viewer
Start with the official King County Parcel Viewer. Search by address, parcel number or condo name, or zoom into the map and click a parcel.
Select the correct parcel
Confirm the parcel location, address, parcel number and summary details. If multiple parcels appear, compare the map carefully before choosing one.
Open the eReal Property report
From the selected parcel, use the report links to open King County Assessor property information. You can also start from the official property information lookup page.
Save the parcel number
Copy the parcel number exactly. You may need it for the property tax payment portal, Recorder parcel search, appeal forms, statement lookup or customer service questions.
Compare tax and document records
After you identify the parcel, check the property tax payment portal and the Recorder Landmark record search if your question involves tax status or legal documents.
How to Look Up King County Property Tax Statements and Payment Options
Use King County Treasury Operations for property tax questions, tax statements and payment options. The property tax section explains ways to pay online, by mail, in person and by secure drop box.
If you only have the property address, first use Parcel Viewer to locate the parcel number. Treasury tax statement tools commonly need your tax account number or parcel number to show the correct account.
Open the property tax information page
Use the official King County property taxes page to review payment methods and Treasury Operations guidance.
Open the payment portal
Use the official King County property tax payment portal to pay real property or personal property tax bills and view account information.
Search by tax account or parcel number
Enter the tax account number or parcel number carefully. If you do not know it, return to Parcel Viewer and copy the parcel number from the official parcel result.
Review service fees before paying
The payment portal may list payment service fees for card or eCheck payments. Read the final payment screen before submitting so there are no surprises.
Save your confirmation
After payment, save or print confirmation details for escrow, mortgage, closing, landlord, business, probate or tax documentation records.
King County Deed Records, Mortgages, Plats, Surveys and Recorded Document Search
Use the King County Recorder’s Office when you need recorded property documents. The Recorder handles documents such as real estate deeds, mortgages, plats, surveys and official recorded document copies.
This matters because an Assessor report may show ownership and value information, but it does not replace recorded documents. For deed history, mortgages, easements, recorded maps or legal document research, use the Recorder search route.
Open Recorder search guidance
Start with the official King County Recorder online records search page. It explains search methods and parcel search limitations.
Open Landmark Web search
Use the King County Landmark Web record search for name search, document search, book/page search, parcel ID search, record date search and instrument number search.
Search by parcel carefully
For parcel search, the Recorder guidance says to enter the first ten digits in the Parcel ID field next to the “Starts With” field. Parcel ID search generally pulls recorded documents from 1997 to current.
Use instrument number when available
If you already have a recording or instrument number, use that number for a cleaner result. It is often the fastest way to find a specific recorded document.
Do not treat assessor data as title proof
For title, deed, easement, lien or legal ownership questions, use Recorder records and qualified title or legal professionals instead of relying only on parcel or tax screens.
Assessor Data Is Not a Deed Search
Use the Assessor for value and property information. Use the Recorder for deeds, mortgages, plats, surveys and recorded documents.
Record accuracyParcel Number Saves Time
Find the parcel number first in Parcel Viewer, then use it for tax statements, Recorder research and appeal paperwork.
Better matchingKing County Valuation Notices, eReal Property Reports and Assessment Information
The King County Assessor property information tools help users review valuation and property details. The Assessor page also links to eReal Property, eValuations, eSales and assessment data resources.
Use these tools when you want to understand the property’s assessed value, compare sales context, review valuation notices, check property details or prepare questions before contacting the Assessor or filing an appeal.
Best for: searching by property tax account or parcel number and reviewing Assessor property information.
Best for: receiving property valuation notices electronically by email when the official service is available.
Best for: searching residential or commercial property sales information to support valuation research.
Best for: requesting or downloading public Assessor property information files when you need broader research data.
King County Assessment Appeal Path and Board of Appeals Help
If you disagree with your property tax assessment, use King County Board of Appeals and Equalization resources. The Board provides property tax assessment appeal forms, guidance on petition submission and hearing information.
Before filing, review the Assessor data carefully and collect evidence. Appeals are stronger when they explain why the assessed value is wrong using comparable sales, property-condition facts, incorrect data or other relevant proof.
Review your Assessor report
Open Parcel Viewer or the Assessor lookup tools and verify parcel number, property characteristics, assessed value and related information before preparing an appeal.
Read the appeal instructions
Open King County’s property tax assessment appeal guide to understand the process before filing.
Use the correct appeal form
Open the official property tax assessment appeal forms page and select the form that matches your property type and appeal need.
Prepare evidence
Use comparable sales, photos, repair documentation, appraisal evidence, property-condition notes and incorrect Assessor-data examples where relevant.
Track communication carefully
If you already have an appeal number or parcel number, include it in appeal communication. The Board lists email and phone contact details for appeal questions.
King County Property Search Tips That Prevent Wrong Results
King County property research is easier when you use the right tool in the right order. Start with the parcel, then verify tax information, then search recorded documents if legal history matters.
Best move: start with street number and street name. Remove unit numbers, punctuation and extra words if the result fails.
Best move: copy the parcel number from Parcel Viewer and reuse it for tax, Recorder and appeal records.
Best move: try the condo-name option in Parcel Viewer if unit-level address searching feels confusing.
Best move: use Treasury Operations tools and confirm the tax account or parcel number before paying.
Best move: use Recorder Landmark Web by name, document, parcel ID, record date or instrument number depending on what you know.
Best move: collect evidence before filing. Comparable sales and factual data errors are stronger than general frustration about tax amounts.
Fast research order for most users
- Start with King County Parcel Viewer.
- Copy the parcel number and open the eReal Property report.
- Open Treasury Operations tax tools to review tax statements and payment options.
- Open Recorder records if you need deeds, mortgages, plats or surveys.
- Review appeal resources only after checking the Assessor information carefully.
- Save PDFs, screenshots or printouts before calling county offices.
Official King County Assessor, Treasury and Recorder Links
Use these official King County resources first. This helps users avoid outdated property mirrors, copied parcel pages, ad-heavy lookup sites and third-party document pages that do not explain the difference between assessment, tax and recorded-document records.
🏠 Parcel Viewer
Search by address, parcel number, condo name or map location and open linked Assessor reports.
Open Parcel Viewer📊 Property Info Tools
Open Assessor tools including eReal Property, eValuations, eSales and assessment data resources.
Open Assessor Tools💵 Property Taxes
Review King County property tax information and ways to pay through Treasury Operations.
Open Tax Info💳 Payment Portal
Pay real property or personal property tax bills and review account details.
Open Payment Portal📄 Recorder Search
Search recorded property documents, deeds, mortgages, plats, surveys and instrument records.
Open Landmark Search⚖️ Appeal Board
Review property tax assessment appeal forms, instructions and hearing information.
Open Appeal InfoKing County Property Records Offices: Phone, Address and Best Use
Use the correct King County department based on your problem. The Assessor, Treasury Operations, Recorder’s Office and Board of Appeals all serve different parts of the property-record journey.
Best for: parcel records, eReal Property reports, assessed value, property characteristics, valuation notices, eSales and assessment data.
Best starting link: Assessor property information tools
Best for: property tax statements, payments, tax account questions, mail payments and payment confirmation.
Address: King Street Center, 201 South Jackson Street #710, Seattle, WA 98104
Phone: 206-263-2890
Email: PropertyTax.CustomerService@kingcounty.gov
Best for: deeds, mortgages, plats, surveys, recorded documents, instrument numbers and document copies.
Best starting link: Recorder online records search guidance
Best for: property tax assessment appeal petitions, forms, hearing information and appeal questions.
Phone: 206-477-3400
Email: boe@kingcounty.gov
Address: 516 3rd Avenue, Room 1222, Seattle, WA 98104-2306
Map to King County Treasury Operations and Downtown Property Service Area
King County property tax services are connected to Treasury Operations at King Street Center in Seattle. Before visiting any King County office, check the official department page because service counters, hours, appointments and document requirements can vary.
King County Treasury Operations — King Street Center
201 South Jackson Street #710, Seattle, WA 98104
King County Board of Appeals and Equalization
516 3rd Avenue, Room 1222, Seattle, WA 98104-2306
King County Property Assessor FAQs for Search, Tax Records and Appeals
How do I search King County property assessor records?
Use King County Parcel Viewer first. Search by address, parcel number, condo name or map location, then open the linked Assessor eReal Property report for detailed property information.
Is King County Property Assessor the same as Treasury Operations?
No. The Assessor handles valuation and property information. Treasury Operations handles property tax statements, billing, payment options and tax account questions.
Where do I pay King County property taxes?
Use the official King County property tax payment portal linked from Treasury Operations. Search by tax account or parcel number and review the payment details before submitting.
Where can I search King County deed records?
Use the King County Recorder online records search or Landmark Web system. These tools help search recorded documents such as deeds, mortgages, plats, surveys and instrument records.
Can I search King County recorded documents by parcel number?
Yes. King County Recorder guidance says parcel search uses the first ten digits in the Parcel ID field next to the “Starts With” field. Parcel search generally pulls documents from 1997 to current.
What is King County Parcel Viewer used for?
Parcel Viewer is used to search parcel-related information by address, parcel number, condo name or map click. It also provides links to Assessor eReal Property reports and other parcel reports.
How do I appeal my King County property assessment?
Use the King County Board of Appeals and Equalization appeal instructions and forms. Review your Assessor report, gather evidence and submit the correct petition within the required appeal rules.
What information do I need for a King County property tax statement?
You generally need your tax account number or parcel number. If you only know the address, use Parcel Viewer first to find the parcel number.
Can King County assessor records replace a title search?
No. Assessor and tax records are public information tools, but they do not replace a title search. For title, deed, lien, survey or ownership-risk questions, use Recorder records and qualified professionals.
Who do I contact for King County property tax questions?
Contact King County Treasury Operations for property tax statement, payment and tax account questions. The listed property tax customer service phone is 206-263-2890 and the email is PropertyTax.CustomerService@kingcounty.gov.
Best Way to Use King County Assessor and Tax Records
The best King County property research process is simple: start with Parcel Viewer, open the Assessor property report, check Treasury Operations for tax statements and payments, and use the Recorder’s Office for deeds and other recorded documents.
This order helps users avoid common mistakes, such as treating tax statements as deed records, assuming Assessor data proves taxes are paid, or using third-party property pages instead of official county tools.