34008 18th Pl S, Federal Way, WA 98003

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

One of 78 reachable small-bay industrial buildings in Federal Way. Larger than 38% of small-bay industrial buildings in Federal Way (median 11,294 SF), derived from assessor records.

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Building size: 8,900 SF, King County Assessor
Lot size: 47,236 SF, King County Assessor
Year built: 1985, King County Assessor
Stories: 1, King County Assessor
Predominant use: Warehouse/Office, King County Assessor
Assessed value: $1,833,900, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $206.06/SF, derived from assessor records
Lot coverage: 19%, derived from assessor records
Vintage: 1980s vintage
Zoning: CE, King County
County use code: Warehouse
Construction (observed): metal, 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.

1820 S 341st Pl, Federal Way · 0 mi · 11,324 SF · built 1999 · assessed $177.28/SF
1908 S 341st Pl, Federal Way · 0 mi · 16,725 SF · built 1985 · assessed $208.17/SF
1800 S 341st Pl, Federal Way · 0 mi · 12,201 SF · built 2000 · assessed $221.94/SF
1704 S 341st Pl, Federal Way · 0.1 mi · 32,760 SF · built 1978 · assessed $221.10/SF
1720 S 341st Pl, Federal Way · 0.1 mi · 11,040 SF · built 1978 · assessed $221.10/SF
1710 S 341st Pl, Federal Way · 0.1 mi · 11,040 SF · built 1978 · assessed $221.10/SF

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Sale history and market context

MakeMe Estimate: $2,384,115 (estimated market value), with a likely range of $1,842,739 to $2,407,956 (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: 2021-09-27 for $2,100,000 (recorded arm's-length sale).

Current ownership dates to 2022 (about 4 years) per recorded transfers.

2022-03-30: transfer from West Coast Ironworks INC to Kubay Investment LLC (non-market transfer), rec. 20220802000151

2021-09-27: $2,100,000 from CRS Electric LLC to West Coast Ironworks INC, rec. 20211005001161

2017-10-26: transfer from Private party to CRS Electric LLC (non-market transfer), rec. 20171101000518

1994-12-20: $445,000 from Private party to Private party, rec. 199412300872

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 $453,200 (2011) to $1,833,900 (2026), up 305% over 15 years, per county tax rolls. The 2026 roll splits $1,833,900 into $1,180,900 land and $653,000 improvements.

Zoning: CE (per King County)

Lot: 47,236 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Storage Warehouse 6,475 SF; Warehouse Office 2,425 SF (county building sections)

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