1400 Airport Way S, Seattle, WA 98134

Office · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: single-story 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 AI estimate from public imagery; may be outdated.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 25% of office buildings in Seattle (median 20,410 SF), derived from assessor records.

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Building size: 5,760 SF, King County Assessor
Lot size: 3,229 SF, King County Assessor
Year built: 1947, King County Assessor
Stories: 2, King County Assessor
Predominant use: Mrj Constructors, King County Assessor
Assessed value: $555,300, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $96.41/SF, derived from assessor records
Lot coverage: 178%, derived from assessor records
Vintage: 1940s vintage
Zoning: MML U/85, King County
County use code: Office Building
Construction (observed): masonry, AI estimate from public imagery
Parking (observed): surface lot, AI estimate from public imagery
Frontage (observed): mid block, AI estimate from public imagery

Nearby comparable buildings

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

1700 Airport Way S, Seattle · 0.2 mi · 49,961 SF · built 1914 · assessed $104.23/SF
1737 Airport Way S, Seattle · 0.3 mi · 161,678 SF · built 1951 · assessed $105.80/SF
1550 4th Ave S, Seattle · 0.3 mi · 47,368 SF · built 1979 · assessed $288.10/SF
1200 12th Ave S, Seattle · 0.3 mi · 398,923 SF · built 1932 · assessed $93.63/SF
1900 Airport Way S, Seattle · 0.3 mi · 7,709 SF · built 1946 · assessed $211.79/SF
714 S Charles St, Seattle · 0.3 mi · 42,308 SF · built 1973

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Sale history and market context

MakeMe Estimate: $1,091,661 (estimated market value), with a likely range of $1,063,063 to $1,442,385 (half of recent verified sales in this segment landed inside that range). Based on 185 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 1998-03-13 for $343,000 (recorded arm's-length sale).

Current ownership dates to 1998 (about 28 years) per recorded transfers.

1998-03-13: $343,000 from Private party to 1400 Airport Way Building LLC, rec. 199803130833

1993-01-13: $228,000 from Private party to Private party, rec. 199302082021

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

Value over time

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 $899,400 (2011) to $555,300 (2026), down 38% over 15 years, per county tax rolls. The 2026 roll splits $555,300 into $274,400 land and $280,900 improvements.

Zoning: MML U/85 (per King County)

Lot: 3,229 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Floor and use mix: Office Building 5,760 SF (county building sections)

County districts report (schools, fire, sewer, council; on kingcounty.gov)