9919 SW 178th St, Vashon, WA 98070

NNN Industrial · Vashon · Seattle-Bellevue metro, WA

Imagery suggests: self-storage facility, 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 AI estimate from public imagery; may be outdated.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 2 reachable nnn industrial buildings in Vashon.

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Building size: 21,580 SF, King County Assessor
Lot size: 64,033 SF, King County Assessor
Year built: 1960, King County Assessor
Stories: 2, King County Assessor
Buildings on parcel: 3, King County Assessor
Predominant use: Retail & Storage, King County Assessor
Assessed value: $2,477,600, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $114.81/SF, derived from assessor records
Lot coverage: 34%, derived from assessor records
Vintage: 1960s vintage
Zoning: CB, King County
County use code: Mini Warehouse
Construction (observed): metal, 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.

10015 SW 178th St, Vashon · 0.1 mi · 57,342 SF · built 2004 · assessed $170.38/SF
15400 1st Ave S, Burien · 6.2 mi · 48,110 SF · built 1980 · assessed $142.21/SF
1625 SW 114th St, Burien · 6.2 mi · 127,160 SF · built 2020 · assessed $139.62/SF
18023 Des Moines Memorial Dr S, Burien · 6.3 mi · 63,493 SF · built 1987 · assessed $120.43/SF
501 S 176th St, Burien · 6.3 mi · 114,400 SF · built 1987 · assessed $120.02/SF
1612 SW 114th St, Burien · 6.3 mi · 70,685 SF · built 1995 · assessed $104.09/SF

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Sale history and market context

MakeMe Estimate: $2,788,767 (estimated market value), with a likely range of $2,244,715 to $3,225,099 (half of recent verified sales in this segment landed inside that range). Based on 22 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 2024-08-30 for $2,100,000 (recorded arm's-length sale).

Current ownership dates to 2024 (about 2 years) per recorded transfers.

2024-08-30: $2,100,000 from Banyan Funding LLC to Rde Investments LLC, rec. 20240830000697

2024-06-17: $1,997,889 from North Star LLC to Banyan Funding LLC (non-market transfer), rec. 20240621000313

2024-02-15: transfer from Private party to Private party (non-market transfer), rec. 20240215000656

2023-03-31: $2,900,000 from Vashon Mini Storage LLC to Graykey Equity Seatac LLC, rec. 20230404000613

3 administrative transfers (no consideration), 2012 to 2013

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 $1,295,900 (2011) to $2,477,600 (2026), up 91% over 15 years, per county tax rolls. The 2026 roll splits $2,477,600 into $1,088,500 land and $1,389,100 improvements.

Zoning: CB (per King County)

Lot: 64,033 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Mini-Warehouse 7,300 SF; Storage Warehouse 6,560 SF; Retail Store 5,800 SF; Garage, Service Repair 1,920 SF (county building sections)

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