18001 NE Union Hill Rd, Redmond, WA 98052

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

Imagery suggests: big-box 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 AI estimate from public imagery; may be outdated.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 241 reachable small-bay industrial buildings in Redmond. Larger than 91% of small-bay industrial buildings in Redmond (median 43,526 SF), derived from assessor records.

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Building size: 287,159 SF, King County Assessor
Lot size: 1,288,465 SF, King County Assessor
Year built: 1986, King County Assessor
Stories: 2, King County Assessor
Buildings on parcel: 2, King County Assessor
Predominant use: Distribution Warehouse, King County Assessor
Assessed value: $87,341,300, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $304.16/SF, derived from assessor records
Lot coverage: 22%, derived from assessor records
Vintage: 1980s vintage
Zoning: MP, King County
County use code: Warehouse
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.

18120 NE 76th St, Redmond · 0.1 mi · 11,177 SF · built 1979
18340 NE 76th St, Redmond · 0.1 mi · 148,212 SF · built 1981 · assessed $266.58/SF
18130 NE 76th St, Redmond · 0.1 mi · 21,384 SF · built 1982 · assessed $309.94/SF
18080 NE 76th St, Redmond · 0.1 mi · 15,439 SF · built 1976
18104 NE 76th St, Redmond · 0.2 mi · 18,172 SF · built 1981
7822 178th Pl NE, Redmond · 0.2 mi · 2,720 SF · built 1970 · assessed $800.11/SF

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Sale history and market context

MakeMe Estimate: $111,809,220 (estimated market value), with a likely range of $96,416,139 to $124,738,348 (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.

2 administrative transfers (no consideration), 1991 to 2011

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 $19,067,900 (2011) to $87,341,300 (2026), up 358% over 15 years, per county tax rolls. The 2026 roll splits $87,341,300 into $64,423,200 land and $22,918,100 improvements.

Zoning: MP (per King County)

Lot: 1,288,465 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Mega Warehouse 241,690 SF; Warehouse Office 7,830 SF; Car Wash - Self Serve 6,135 SF (county building sections)

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

Permit history

2024-07-22: Other, declared value $1,500 (Complete), permit ELEC-2024-05173

2019-04-04: Other, declared value $31,518 (Screened), permit BLDG-2019-01484

2018-11-09: Remodel, declared value $11,085,060 (Complete), permit BLDG-2018-06325

2017-06-13: Remodel, declared value $2,900,000 (Complete), permit BLDG-2016-10086

Source: King County permit records (newest first).