18415 International Blvd, Seatac, WA 98188

Commercial · Seatac · Seattle-Bellevue metro, WA

Imagery suggests: mid-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 AI estimate from public imagery; may be outdated.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 65 reachable commercial buildings in Seatac. Larger than 57% of commercial buildings in Seatac (median 54,984 SF), derived from assessor records.

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Building size: 64,306 SF, King County Assessor
Lot size: 71,132 SF, King County Assessor
Year built: 1990, King County Assessor
Stories: 6, King County Assessor
Buildings on parcel: 2, King County Assessor
Predominant use: Coast Gateway Hotel, King County Assessor
Assessed value: $18,048,300, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $280.66/SF, derived from assessor records
Lot coverage: 90%, derived from assessor records
Vintage: 1990s vintage
Zoning: CB-C, King County
County use code: Hotel/Motel
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.

18740 International Blvd, Seatac · 0.1 mi · 588,728 SF · built 1978 · assessed $198.55/SF
18220 International Blvd, Seatac · 0.2 mi · 135,292 SF · built 1970 · assessed $125.20/SF
2824 S 188th St, Seatac · 0.2 mi · 70,593 SF · built 1970 · assessed $274.71/SF
18118 International Blvd, Seatac · 0.2 mi · 117,218 SF · built 1988 · assessed $286.42/SF
3056 S 188th St, Seatac · 0.2 mi · 134,724 SF · built 2018 · assessed $195.55/SF
18845 International Blvd, Seatac · 0.3 mi · 26,157 SF · built 1960 · assessed $161.12/SF

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Sale history and market context

MakeMe Estimate: $18,008,712 (estimated market value), with a likely range of $15,260,545 to $21,788,825 (half of recent verified sales in this segment landed inside that range). Based on 34 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 1998-11-25 for $8,882,442 (recorded arm's-length sale).

Current ownership dates to 2016 (about 10 years) per recorded transfers.

2 administrative transfers (no consideration), 2016 to 2016

1998-11-25: $8,882,442 from Private party to Northcoast Washington LLC, rec. 199812021364

1996-04-01: $10,918,164 from Gateway Hotel Limited Partnership to Private party, rec. 199604020371

1996-03-27: $850 from Private party to Seatac City of (non-market transfer), rec. 199603290046

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 $6,811,200 (2011) to $18,048,300 (2026), up 165% over 15 years, per county tax rolls. The 2026 roll splits $18,048,300 into $4,054,500 land and $13,993,800 improvements.

Zoning: CB-C (per King County)

Lot: 71,132 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Hotel, Full Service Midscale 55,732 SF; Restaurant, Table Service 5,184 SF; Basement, Finished 2,190 SF; Office Building 1,200 SF (county building sections)

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

Permit history

2026-03-01: Electrical, declared value $1,050, permit 2602-1203-ELE

2025-02-24: Sign, declared value $9,820 (Screened), permit 2501-1165-SGN

2025-02-24: Electrical, declared value $600 (Screened), permit 2502-1165-ELE

2025-02-06: Electrical, declared value $2,000 (Screened), permit 2502-1051-ELE

2025-01-30: Electrical, declared value $45,000 (Complete), permit 2501-1248-ELE

2025-01-07: Plumbing, declared value $4,520 (Complete), permit 2412-1168-PLM

2024-12-17: Electrical, declared value $10,000 (Complete), permit 2412-1080-ELE

2023-09-06: Electrical, declared value $2,660 (Complete), permit 2309-1016-ELE

2021-08-19: Electrical, declared value $3,000 (Complete), permit ELE21-0428

2021-06-16: Electrical, declared value $15,500 (Complete), permit ELE21-0286

Source: King County permit records (newest first).