Sammamish Property Records Lookup
Property records for Sammamish are administered by King County. The King County Assessor values every parcel annually, and the County Auditor records deeds and other instruments that establish ownership and encumbrances. If you are searching for Sammamish property data, this page points you to the right offices and online tools to get what you need.
Sammamish Overview
King County Assessor – Sammamish Property Data
The King County Assessor maintains all property assessment records for parcels within Sammamish. Washington law under RCW 84.40.020 requires valuation at 100% of true and fair market value as of January 1 each year. Sammamish sits in one of the highest-value residential markets in the state, so assessments here tend to be among the larger ones in King County. The Assessor revalues all parcels on a continuous cycle under RCW 84.41.030.
Assessor records for Sammamish include the legal description of each parcel, the owner of record, building details like square footage and year built, recent sale prices, and the split between land and improvement values. These records are public and can be pulled up online without any charge. The Assessor also maintains parcel maps linked to the interactive King County iMap tool.
If you own property in Sammamish and believe the assessed value is too high, you can file an appeal with the King County Board of Equalization. That appeal must typically be filed within 60 days of your value change notice. The Assessor's website has the forms and instructions. Exemption programs for seniors and disabled persons are also managed out of this office.
The King County Assessor's site is here: King County Assessor provides parcel search, exemption applications, and property valuation tools for Sammamish owners.
The Assessor portal is the primary source for all valuation and parcel data on Sammamish properties.
Search Sammamish Parcel Records Online
The King County eReal Property tool lets you look up any parcel in Sammamish by address or parcel number. Results include the owner of record, assessed land and improvement values, recent sales, lot size, and a link to the parcel map. No login is needed, and the search is free. This is the fastest way to verify who owns a property and what it is assessed at.
If you need recorded documents like deeds or mortgages, the King County Recorder's online index links to scanned copies of instruments filed in recent years. Older documents may require a direct request to the King County Archives. For a broader view of how Washington handles county-level property records, the Washington Department of Revenue maintains a directory of all 39 county assessor and treasurer websites.
The City of Sammamish at sammamish.us also maintains GIS maps and zoning data for parcels within city limits. You can use their online tools to verify zoning classifications, view lot boundaries, or look up permit history for a specific address.
Sammamish Property Taxes
The King County Treasurer handles all property tax billing and collection for Sammamish. Tax bills go out once a year. The first half is due April 30 and the second half is due October 31. You can check balances and pay online through the King County Treasury website or pay in person at the county offices.
Property tax records are public under Chapter 42.56 RCW. You can look up current and prior year tax data through the county's online system. If taxes fall delinquent, the Treasurer can initiate foreclosure proceedings. Sammamish owners who miss a payment should contact the Treasurer's office quickly to discuss payment options before the foreclosure process advances.
Note: The Washington Department of Revenue publishes guidance on property tax rates, levy limits, and exemption programs that apply to Sammamish and all other Washington cities.
Deeds and Title Documents in Sammamish
Recorded documents for Sammamish real estate are kept by the King County Auditor. Under RCW 65.08.070, recording provides constructive notice to all future buyers and lenders. If a deed is not recorded, it may be valid between the parties who signed it, but a later buyer who records first without knowledge of the prior deed could take clear title. That is why recording is standard practice for every Sammamish real estate transaction.
The Auditor operates under RCW 36.22.010 and must record documents that comply with the formatting rules in RCW 65.04.045. Before a deed is recorded, the real estate excise tax under RCW 82.45 must be paid. The Treasurer affixes a tax stamp showing excise tax is satisfied, then the Auditor records the document and assigns it a recording number.
The recorded document index for King County is searchable online. You can look up deeds, mortgages, liens, easements, and any other recorded instrument by grantor or grantee name. Scanned copies of recent documents are available online. Older materials may be held at the King County Archives.
State Resources for Sammamish Property Research
Beyond the county, several state resources are useful for Sammamish property research. The Washington State Digital Archives holds historical property records including real property record cards from the 1930s and 1940s, early deeds, and subdivision plats. These are free to search online and can help with chain-of-title work going back many decades.
The MRSC page on county officials explains the roles and duties of county assessors under Chapter 36.21 RCW, which sets out the general authority and responsibilities of the assessor's office across Washington. Understanding these duties can help you know what to ask for when you contact the King County Assessor about a Sammamish parcel.
King County Property Records
Sammamish falls within King County. Assessments, tax collection, and recorded documents all run through county offices. Visit the King County property records page for a broader look at county resources available to Sammamish property owners and researchers.
Nearby Cities
These cities near Sammamish also handle property records through King County.