An ownership history is a compilation of property ownership changes through time, listing names and dates associated with each transfer. Generally, this information will be compiled by locating deedsor other vesting documents. There is not a one-stop search to research this, but there are several methods and resources you can utilize to compile this information. It is easiest to move backward in time, starting with the year that the current owner purchased the property. When you locate the name of the last person to sell the property (as the grantor), you will then search backward until you find when they bought the property (as the grantee), and so on.
Online Resources
King County Parcel Viewer, mid-1980s to present
Locate by: Parcel Number or Address
The County Assessor's Office Parcel Viewer site features a Property Detail Report, which may be accessed with the address or parcel number of the property. At the bottom of the Property Detail Report under Sales History, there may be a list of deeds, with names and dates, showing when the property has changed ownership from the mid-1980s to the present.
Landmark, 1976 to present
Locate by: Name(s) and Date(s)
The County Recorder's Office online portal Landmark includes an online index of all recorded documents (including deeds) from 1976 to present. Images of most documents (including vesting deeds) are available online from August 1, 1991, to present. To search for recorded documents online, conduct multiple searches by name, parcel number, section-township-range, or other criteria to ensure more relevant results.
The Recorder's Office did not consistently use the parcel number in indexing until about 2002. For best results, type in as little information as possible while still trying to use enough unique information to retrieve manageable search results.
Physical Records at the County Archives
General Recordings Index, 1853-1975
Locate by: Name(s) and Date(s) only
King County Archives provides on-site, in-person access to the General Recordings Index (Grantor / Grantee Indexes) in our microfilm research room. These records are not yet digitized. Recorded documents from this time period are only organized by name or recording number. They are not organized by address or parcel number. Each microfilm reel only covers one or two years of recorded documents.
The most effect way to search these records is to determine the approximate year or year range (5 to 10 is best) to narrow down your research. The broader the date range, the more microfilm you may have to search. The grantor / grantee indexes are the most comprehensive, direct method of locating deeds, but the resources listed below may also help you narrow your search.
Sales Histories, 1973-1981
Locate by: Parcel Number
King County Archives hold sales histories on microfilm. These records index excise tax affidavits by the parcel number. If located, the excise tax affidavit may be used to help track down the deed, or it might be sufficient itself for compiling an ownership history. Copies of the sales histories are also available for research at the County Department of Assessments.
Excise Tax Index, 1961-1997
Locate by: Legal Description
King County Archives holds excise tax indexes on microfilm. These records are searchable by the property's legal description. The indexes will provide an excise tax number. You may then use the excise tax number to locate the excise tax affidavit, which will point you to the corresponding deed.
Because the tax index volumes contain only the legal description, researching them can be time-consuming, especially for large plats or for unplatted properties.
Physical Records at Other Locations
Real Property Record Cards, 1891-1972
Locate by: Parcel Number or Legal Description
If you're trying to locate the name(s) of the previous owner or the date they owned the property, the County Assessor's Office real property record cards may prove useful. The cards are held by Puget Sound Regional Archives in Bellevue, and they document all parcels in King County from 1937 to 1972. Some cards contain the names of property owners or purchasers between 1937 and 1972. The cards are not organized by name or date. You need the parcel number of legal description of the property to search them.
Tax Assessment Rolls, 1891-1941
Locate by: Legal Description
Puget Sound Regional Archives also holds King County Assessor's Office tax assessment rolls, which may only be accessed using the legal description of the property. The tax rolls don't specify when or to whom a property was sold, but they may help you narrow your search by listing who the property taxpayer was during a given year.
Property Abstracts, 1907-1990
Locate by: Legal Description
Property abstracts are only available for properties within Seattle city limits. The Seattle Department of Construction and Inspections Public Resource Center holds microfilmed abstracts (sometimes called "title abstracts" or "abstract books"). The abstracts are organized by legal description and show all ownership changes up to 1990 with names, dates, and recording numbers.