4122 B Pl NW, Auburn, WA 98001

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

Imagery suggests: industrial warehouse. 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 AI estimate from public imagery; may be outdated.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 426 reachable small-bay industrial buildings in Auburn. Larger than 61% of small-bay industrial buildings in Auburn (median 18,750 SF), derived from assessor records.

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Building size: 24,162 SF, King County Assessor
Lot size: 52,928 SF, King County Assessor
Year built: 1996, King County Assessor
Stories: 1, King County Assessor
Predominant use: Warehouse, King County Assessor
Assessed value: $4,190,400, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $173.43/SF, derived from assessor records
Lot coverage: 46%, derived from assessor records
Vintage: 1990s vintage
Zoning: M1, King County
County use code: 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.

4114 B Pl NW, Auburn · 0 mi · 11,970 SF · built 1991 · assessed $147.77/SF
4132 B Pl NW, Auburn · 0 mi · 52,950 SF · built 1990 · assessed $163.62/SF
3941 B St NW, Auburn · 0 mi · 7,424 SF · built 1987 · assessed $149.54/SF
4108 B Pl NW, Auburn · 0.1 mi · 18,287 SF · built 1992 · assessed $176.17/SF
4118 B Pl NW, Auburn · 0.1 mi · 36,668 SF · built 1993 · assessed $186.02/SF
3931 B St NW, Auburn · 0.1 mi · 6,000 SF · built 1987 · assessed $149.88/SF

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Sale history and market context

MakeMe Estimate: $5,931,238 (estimated market value), with a likely range of $5,114,668 to $6,617,101 (half of recent verified sales in this segment landed inside that range). Based on 96 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 2006-01-12 for $2,000,000 (recorded arm's-length sale).

Current ownership dates to 2006 (about 20 years) per recorded transfers.

2006-01-12: $2,000,000 from Wilson Properties LLC to J & K Manufacturing LLC, rec. 20060112000746

1997-08-05: transfer from Private party to Wilson Properties LLC (non-market transfer), rec. 199709031199

1995-12-27: $250,500 from Systems Control INC to Private party, rec. 199512281883

1992-12-01: $213,900 from Private party to Vehicle Test Technology INC, rec. 199212101386

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 $1,812,100 (2011) to $4,190,400 (2026), up 131% over 15 years, per county tax rolls. The 2026 roll splits $4,190,400 into $899,700 land and $3,290,700 improvements.

Zoning: M1 (per King County)

Lot: 52,928 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Storage Warehouse 19,682 SF; Warehouse Office 2,240 SF (county building sections)

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