3601 W Marginal Way SW, Seattle, WA 98106

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

Imagery suggests: industrial warehouse. AI estimate from public imagery. In recent public imagery (2026-06), the building shows signs of deferred maintenance. AI estimate from public imagery; may be outdated.

One of 1,229 reachable small-bay industrial buildings in Seattle. Larger than 73% of small-bay industrial buildings in Seattle (median 14,469 SF), derived from assessor records.

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Building size: 28,209 SF, King County Assessor
Lot size: 20,010 SF, King County Assessor
Year built: 1966, King County Assessor
Stories: 2, King County Assessor
Predominant use: Warehouse And Shop, King County Assessor
Assessed value: $5,574,400, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $197.61/SF, derived from assessor records
Lot coverage: 141%, derived from assessor records
Vintage: 1960s vintage
Zoning: MML U/85, King County
County use code: Industrial(Gen Purpose)
Construction (observed): metal, AI estimate from public imagery
Parking (observed): street only, 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.

3801 Marginal Pl SW, Seattle · 0 mi · 10,178 SF · built 1971 · assessed $200.85/SF
3800 W Marginal Way SW, Seattle · 0.1 mi · 130,550 SF · built 1948 · assessed $130.08/SF
3813 17th Ave SW, Seattle · 0.1 mi · 1,781 SF · built 2015 · assessed $198.26/SF
3835 W Marginal Way SW, Seattle · 0.1 mi · 3,000 SF · built 1918 · assessed $270.07/SF
3839 W Marginal Way SW, Seattle · 0.1 mi · 4,854 SF · built 1979 · assessed $210.90/SF
3542 W Marginal Way SW, Seattle · 0.1 mi · 70,248 SF · built 1975 · assessed $210.78/SF

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Sale history and market context

MakeMe Estimate: $7,005,288 (estimated market value), with a likely range of $4,919,404 to $7,758,364 (half of recent verified sales in this segment landed inside that range). Based on 86 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 2003-06-11 for $750,000 (recorded arm's-length sale).

Current ownership dates to 2005 (about 21 years) per recorded transfers.

2 administrative transfers (no consideration), 2005 to 2005

2005-09-27: $10,000 from Duwamish Industrial Corp to West Marginal Way Properties LLC (non-market transfer), rec. 20050928002296

2005-09-27: transfer from Duwamish Industrial Corp to West Marginal Way Properties LLC (non-market transfer), rec. 20050928002297

2003-06-11: $750,000 from American Retirement INC to Private party, rec. 20030613003050

1997-09-29: $1,000,000 from Private party to American Retirement INC (part of a 2-parcel sale; price is the whole deal), rec. 199709301791

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 $1,746,100 (2011) to $5,574,400 (2026), up 219% over 15 years, per county tax rolls. The 2026 roll splits $5,574,400 into $1,150,500 land and $4,423,900 improvements.

Zoning: MML U/85 (per King County)

Lot: 20,010 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Industrial Light Manufacturing 22,458 SF; Open Office 2,220 SF (county building sections)

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

Permit history

2025-05-28: Other, declared value $236,755 (Screened), permit 7005885-CN

2016-04-12: Remodel, declared value $35,750 (Complete), permit 6520810

2016-02-03: Remodel, declared value $295,459 (Complete), permit 6495781

2015-04-17: Remodel, declared value $217,760 (Complete), permit 6445833

2014-02-28: Remodel, declared value $75,000 (Complete), permit 6388222

2009-10-16: Remodel, declared value $52,000 (Complete), permit 6216970

2008-03-24: Remodel, declared value $669,001 (Complete), permit 6117281

2008-02-28: Building, New (Complete), permit 3005649

Source: King County permit records (newest first).