31405 18th Ave S, Federal Way, WA 98003
Office · Federal Way · Seattle-Bellevue metro, WA
Imagery suggests: standalone commercial building. 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 AI estimate from public imagery; may be outdated.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 171 reachable office buildings in Federal Way. Larger than 73% of office buildings in Federal Way (median 9,872 SF), derived from assessor records.
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Claim or manage this building- Building size
- 23,136 SF, King County Assessor
- Lot size
- 117,612 SF, King County Assessor
- Year built
- 1959, King County Assessor
- Stories
- 2, King County Assessor
- Predominant use
- Medical Building, King County Assessor
- Assessed value
- $5,884,800, per the King County Assessor (not a market appraisal)
- Assessed value per building SF
- $254.36/SF, derived from assessor records
- Lot coverage
- 20%, derived from assessor records
- Vintage
- 1950s vintage
- Zoning
- CF, King County
- County use code
- Medical/Dental Office
- 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.
- 1711 S 312th St, Federal Way · 0.1 mi · 3,956 SF · built 1970 · assessed $216.03/SF
- 1627 S 312th St, Federal Way · 0.1 mi · 4,680 SF · built 1960 · assessed $300/SF
- 1748 S 312th St, Federal Way · 0.1 mi · 1,954 SF · built 1943 · assessed $274.97/SF
- 1825 S 316th St, Federal Way · 0.2 mi · 17,170 SF · built 2006 · assessed $425/SF
- 1436 S 312th St, Federal Way · 0.2 mi · 7,749 SF · built 1960 · assessed $325/SF
- 31003 18th Ave S, Federal Way · 0.2 mi · 3,888 SF · built 1945 · assessed $248.61/SF
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