1531 Utah Ave S, Seattle, WA 98134

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

Imagery suggests: commercial facade. 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 AI estimate from public imagery; may be outdated.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 1,229 reachable small-bay industrial buildings in Seattle. Larger than 99% of small-bay industrial buildings in Seattle (median 14,469 SF), derived from assessor records.

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Building size: 285,007 SF, King County Assessor
Lot size: 58,851 SF, King County Assessor
Year built: 2009, King County Assessor
Stories: 6, King County Assessor
Predominant use: Mixed Use Ofc / Mfg / Sales & Service, King County Assessor
Assessed value: $48,924,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $171.66/SF, derived from assessor records
Lot coverage: 484%, derived from assessor records
Vintage: 2000s vintage
Zoning: MML U/85, King County
County use code: Industrial(Lignt)
Construction (observed): masonry, 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.

85 S Atlantic St, Seattle · 0 mi · 24,632 SF · built 1937 · assessed $202.22/SF
1548 1st Ave S, Seattle · 0.1 mi · 12,550 SF · built 1970 · assessed $247.34/SF
1534 1st Ave S, Seattle · 0.1 mi · 40,878 SF · built 1928 · assessed $160.84/SF
100 S Massachusetts St, Seattle · 0.1 mi · 14,272 SF · built 1996 · assessed $312.14/SF
1714 1st Ave S, Seattle · 0.2 mi · 18,406 SF · built 1927 · assessed $229.93/SF
1743 1st Ave S, Seattle · 0.2 mi · 22,580 SF · built 1927 · assessed $143.60/SF

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Sale history and market context

MakeMe Estimate: $63,522,690 (estimated market value), with a likely range of $49,098,193 to $64,157,917 (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.

Current ownership dates to 2008 (about 18 years) per recorded transfers.

2018-03-12: $10 from 1531 Utah Avenue South LP to Stadium Innovation Center LP (part of a 3-parcel sale; price is the whole deal), rec. 20180322000838

2018-03-12: $10 from Stadium Innovation Center LP to Sic RP LLC (part of a 3-parcel sale; price is the whole deal), rec. 20180322000839

2008-04-16: $11,000,000 from American Retirement INC to 1531 Utah Avenue South Limited Partnership (part of a 3-parcel sale; price is the whole deal), rec. 20080417000666

1998-10-05: $2,100,000 from Private party to Private party (part of a 3-parcel sale; price is the whole deal), rec. 199810061996

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 $36,210,400 (2011) to $48,924,000 (2026), up 35% over 15 years, per county tax rolls. The 2026 roll splits $48,924,000 into $6,179,300 land and $42,744,700 improvements.

Zoning: MML U/85 (per King County)

Lot: 58,851 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Floor and use mix: Office Building 133,952 SF; Parking Structure 97,431 SF; Computer Center 46,630 SF; Storage Warehouse 6,994 SF (county building sections)

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

Permit history

2025-12-23: Remodel, declared value $200,000, permit 7102735-CN

2023-01-18: Remodel, declared value $6,000 (Screened), permit 6943247-CN

2022-10-07: Remodel (Screened), permit 6905361-BK

2020-12-04: Remodel, declared value $1,250,000 (Complete), permit 6780111-CN

2017-12-29: Remodel, declared value $150,000 (Screened), permit 6636352

2015-10-13: Remodel, declared value $165,000 (Screened), permit 6476481

2015-08-03: Remodel, declared value $1,875,000 (Screened), permit 6476480

2013-12-09: Remodel, declared value $600,000 (Screened), permit 6385742

2013-02-27: Remodel, declared value $210,600 (Complete), permit 6265611

2012-01-24: Remodel, declared value $750,000 (Complete), permit 6302333

Source: King County permit records (newest first).