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Real Property Record Cards were created by the King County Assessor’s Office to capture information through time necessary to value land and buildings for the assessment and collection of real property taxes by the County. This series of records was established through a survey funded by a contract between King County Assessor and the federal Works Progress Administration (WPA). The survey began in 1937 and was completed in 1940. The Real Property Record Cards were updated by the Assessor’s Office through 1972, when they were replaced by an automated database and folios that served as field reference files. The Real Property Record Cards contain information on individual parcels of property, including legal descriptions, building types, building uses, number of rooms, construction details, and at least one photograph of each building on the parcel. If significant exterior changes were made to the buildings additional photographs were taken. The cards also contain the assessed valuation for each parcel of property for the period ca. 1937 to 1972. The project to scan the original hardcopy Real Property Record Cards has just begun. Only a small portion of the collection is currently available online. More records will be posted as they are scanned.
To search by parcel number, enter the 10-digit parcel number with a hyphen between the 6th and 7th digits, e.g., 123456-7890. The parcel number is the first 10 digits of the 12-digit property tax account number for the property. The parcel number can also be found using the King County Parcel Viewer site: http://www5.kingcounty.gov/parcelviewer/viewer/kingcounty/viewer.asp
To search by address, enter both the house number and street name. Do NOT enter the street direction (E,W,N,S) or street suffix (St., Ave., Blvd., etc.) when entering the street name.
To search by legal description, enter the abbreviated plat name as used by the King County Department of Assessments or a part of the plat name. Do not include “Addition” as part of the plat name.
For further information on this or related records series, contact the Puget Sound Branch Archives at 425-564-3940, or e-mail PSBranchArchives@sos.wa.gov
Source: King County Government, Office of the County Assessor, Seattle, WA
Original record located at Puget Sound Regional Branch, Washington State Archives, Bellevue, WA.