502 Rainier Ave S, Seattle, WA 98144

Office · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: low-rise office, appears multi-tenant. AI estimate from public imagery. In recent public imagery (2026-06), the building appears well maintained. AI estimate from public imagery; may be outdated.

One of 957 reachable office buildings in Seattle. Larger than 45% of office buildings in Seattle (median 20,410 SF), derived from assessor records.

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Building size
14,826 SF, King County Assessor
Lot size
9,000 SF, King County Assessor
Year built
2002, King County Assessor
Stories
2, King County Assessor
Predominant use
502 Rainer Office, King County Assessor
Assessed value
$2,374,700, per the King County Assessor (not a market appraisal)
Assessed value per building SF
$160.17/SF, derived from assessor records
Lot coverage
165%, derived from assessor records
Vintage
2000s vintage
Zoning
NC2-75 (M), King County
County use code
Office Building
Construction (observed)
masonry, AI estimate from public imagery
Parking (observed)
surface lot, AI estimate from public imagery

Nearby comparable buildings

Same building type, by distance. Assessor facts only; not an opinion of value.

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Sale history and market context

MakeMe Estimate: $2,863,044 (estimated market value), with a likely range of $2,587,482 to $3,730,411 (half of recent verified sales in this segment landed inside that range). Based on 55 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 1999-02-25 for $545,000 (recorded arm's-length sale).

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

$1.15M$2.29M$3.44M$4.58M201120142017202020232026County appraised valueEstimated value (modeled range)

Solid line: county appraised value per King County tax rolls. Shaded range: our modeled estimate for each year, built from recorded arm's-length sales in the building's segment; years without enough sales stay unmodeled. Dots: recorded arm's-length sales. Not an appraisal. How this estimate works.

Land, site, and value history

Assessed value moved from $1,727,500 (2011) to $2,374,700 (2026), up 37% over 15 years, per county tax rolls. The 2026 roll splits $2,374,700 into $1,890,000 land and $484,700 improvements.

Taxes

Permit history

Source: King County permit records (newest first).