County valuation incomplete: County building evidence or valuation-model support is incomplete here, so this page shows county public facts and private owner claim tools without a MakeMe Estimate.
One of 1,701 reachable office buildings in Seattle.
Building size (estimated)
2,854 SF, estimated from lot coverage
Lot size
6,343 SF, King County Assessor
Predominant use
Office Building, King County Assessor
Assessed value
$6,025,800, per the King County Assessor (not a market appraisal)
Zoning
SM-SLU 175/85-280, King County
County use code
Office Building
Nearby comparable buildings
Same building type, by distance. Assessor facts only; not an opinion of value.
County building evidence or valuation-model support is incomplete here, so this page shows county public facts and private owner claim tools without a MakeMe Estimate.
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Last sold: 1998-06-05 for $2,300,000 (recorded arm's-length sale).
Current ownership dates to 1998 (about 28 years) per recorded transfers.
2020-01-06: $50,000 from 507 Westlake LLC to City Investors IX LLC (part of a 4-parcel sale; price is the whole deal), rec. 20200608001571
2019-12-05: transfer from City Investors IX LLC to City of Seattle (part of a 3-parcel sale; price is the whole deal), rec. 20191212000659
2019-09-12: $746,699 from King County to City Investors IX LLC (part of a 3-parcel sale; price is the whole deal), rec.
1998-06-05: $2,300,000 from Private party to City Investors IX LLC, rec. 199806051699
Source: King County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.
Value over time
Dark line: county assessed value per King County tax rolls. Diamonds: recorded arm's-length sales.
Land, site, and value history
Assessed value moved from $1,569,500 (2011) to $6,025,800 (2026), up 284% over 15 years, per county tax rolls. The 2026 roll splits $6,025,800 into $6,025,800 land and $0 improvements.