900 S 336th St, Federal Way, WA 98003

Office · Federal Way · Seattle-Bellevue metro, WA

Imagery suggests: single-story 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 AI estimate from public imagery; may be outdated.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 20% of office buildings in Federal Way (median 9,872 SF), derived from assessor records.

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Building size: 4,080 SF, King County Assessor
Lot size: 52,000 SF, King County Assessor
Year built: 1979, King County Assessor
Stories: 1, King County Assessor
Predominant use: Office Building, King County Assessor
Assessed value: $1,413,100, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $346.35/SF, derived from assessor records
Lot coverage: 8%, derived from assessor records
Vintage: 1970s vintage
Zoning: OP, King County
County use code: Office Building
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.

930 S 336th St, Federal Way · 0.1 mi · 11,473 SF · built 1980 · assessed $196.27/SF
909 S 336th St, Federal Way · 0.1 mi · 39,516 SF · built 1979 · assessed $140.17/SF
33400 9th Ave S, Federal Way · 0.1 mi · 59,572 SF · built 1999 · assessed $123.09/SF
33515 9th Ave S, Federal Way · 0.1 mi · 3,744 SF · built 2007 · assessed $400/SF
801 S 336th St, Federal Way · 0.1 mi · 29,803 SF · built 1976 · assessed $214.50/SF
33710 9th Ave S, Federal Way · 0.1 mi · 21,341 SF · built 1979 · assessed $196.27/SF

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Sale history and market context

MakeMe Estimate: $1,494,191 (estimated market value), with a likely range of $1,455,049 to $1,974,239 (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: 2009-01-12 for $1,100,000 (recorded arm's-length sale).

Current ownership dates to 2009 (about 17 years) per recorded transfers.

2009-01-12: $1,100,000 from Didomenico Enterprises LP to Northwest Natural Health LLC, rec. 20090129001364

6 administrative transfers (no consideration), 1992 to 1992

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 $821,300 (2011) to $1,413,100 (2026), up 72% over 15 years, per county tax rolls. The 2026 roll splits $1,413,100 into $728,000 land and $685,100 improvements.

Zoning: OP (per King County)

Lot: 52,000 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 4,080 SF (county building sections)

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