4020 Airport Way S, Seattle, WA 98108

Small-Bay Industrial · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: light industrial, 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 AI estimate from public imagery; may be outdated.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 1,229 reachable small-bay industrial buildings in Seattle. Larger than 21% of small-bay industrial buildings in Seattle (median 14,469 SF), derived from assessor records.

Own this building?

Claim privately

Claiming is for you. Your mailing address is never shown; no offer reaches you unless you opt in.

Claimed owners can confirm facts, watch the estimate, and decide whether to reply.

Claim or manage this building
Building size
6,230 SF, King County Assessor
Lot size
11,900 SF, King County Assessor
Year built
1952, King County Assessor
Stories
1, King County Assessor
Predominant use
Ofc/Whse, King County Assessor
Assessed value
$942,100, per the King County Assessor (not a market appraisal)
Assessed value per building SF
$151.22/SF, derived from assessor records
Lot coverage
52%, derived from assessor records
Vintage
1950s vintage
Zoning
MML U/85, King County
County use code
Warehouse
Construction (observed)
metal, 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.

Want to talk to the owner? makeme1031 delivers a private, principal-to-principal letter to the owner of record. We never publish the owner's identity or address.

Sale history and market context

MakeMe Estimate: $1,541,273 (estimated market value), with a likely range of $1,191,287 to $1,556,686 (half of recent verified sales in this segment landed inside that range). Based on 81 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 1989-08-28 for $300,000 (recorded arm's-length sale).

Current ownership dates to 2020 (about 6 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

$404K$808K$1.21M$1.62M201120142017202020232026County 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 $870,500 (2011) to $942,100 (2026), up 8% over 15 years, per county tax rolls. The 2026 roll splits $942,100 into $833,000 land and $109,100 improvements.

Taxes