506 Westlake Ave N, Seattle, WA 98109

Office · Seattle · Seattle-Bellevue metro, WA

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)
5,713 SF, estimated from lot coverage
Lot size
12,695 SF, King County Assessor
Predominant use
Office Building, King County Assessor
Assessed value
$12,060,200, 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 valuation incomplete

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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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Sale history and market context

Current ownership dates to 1999 (about 27 years) per recorded transfers.

Source: King County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.

Value over time

$0$5M$10M$15M201120142017202020232026$12.1MCounty assessed value

Dark line: county assessed value per King County tax rolls.

Land, site, and value history

Assessed value moved from $2,989,300 (2011) to $12,060,200 (2026), up 303% over 15 years, per county tax rolls. The 2026 roll splits $12,060,200 into $12,060,200 land and $0 improvements.

Taxes