307 S Washington St, Seattle, WA 98104

Multifamily · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: mid-rise mixed-use, 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 AI estimate from public imagery; may be outdated.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 5,391 reachable multifamily buildings in Seattle. Larger than 77% of multifamily buildings in Seattle (median 9,444 SF), derived from assessor records.

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Building size: 25,027 SF, King County Assessor
Lot size: 7,180 SF, King County Assessor
Year built: 1905, King County Assessor
Stories: 4, King County Assessor
Predominant use: Low Income Apartment W/Retail On 1st Flr, King County Assessor
Units: 52, King County Assessor
Assessed value: $7,946,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $317.50/SF, derived from assessor records
Lot coverage: 349%, derived from assessor records
Vintage: pre-war vintage
Zoning: PSM 100/120-150, King County
County use code: Apartment
Construction (observed): masonry, AI estimate from public imagery
Parking (observed): street only, AI estimate from public imagery
Frontage (observed): corner, AI estimate from public imagery

Nearby comparable buildings

Same building type, by distance. Assessor facts only; not an opinion of value.

224 S Washington St, Seattle · 0 mi · 34,292 SF · built 2020
223 Yesler Way, Seattle · 0 mi · 188,243 SF · built 1908 · assessed $66.49/SF
201 Yesler Way, Seattle · 0.1 mi · 90,959 SF · built 2007 · assessed $336.53/SF
442 S Main St, Seattle · 0.1 mi · 91,128 SF · built 2015 · assessed $258.71/SF
215 2nd Ave S, Seattle · 0.1 mi · 38,765 SF · built 1900 · assessed $117.43/SF
308 4th Ave S, Seattle · 0.1 mi · 162,990 SF · built 1910 · assessed $108.06/SF

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Sale history and market context

MakeMe Estimate: $7,181,809 (estimated market value), with a likely range of $6,375,201 to $8,192,447 (half of recent verified sales in this segment landed inside that range). Based on 667 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works. About $138K per unit at the midpoint (52 units).

Last sold: 1992-12-10 for $580,000 (recorded arm's-length sale).

Current ownership dates to 2009 (about 17 years) per recorded transfers.

2021-10-29: $646,200 from Downtown Emergency Service Center to S-Qozb LLC, rec. 20211112002067

2009-11-30: transfer from Union Hotel Limited Partnership to Downtown Emergency Service Center (non-market transfer), rec. 20091207001966

1992-12-10: $580,000 from Union Hotel Associates to Union Hotel Limited Prtnrshp, rec. 199212112615

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 $3,917,000 (2011) to $7,946,000 (2026), up 103% over 15 years, per county tax rolls. The 2026 roll splits $7,946,000 into $3,338,700 land and $4,607,300 improvements.

Zoning: PSM 100/120-150 (per King County)

Lot: 7,180 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Apartment 21,600 SF; Basement, Unfinished 2,227 SF; Retail Store 1,200 SF (county building sections)

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

Permit history

2024-06-12: Electrical, declared value $500 (Screened), permit 7030382-EL

2024-06-04: Electrical, declared value $12,000 (Screened), permit 7028724-EL

2024-03-28: Electrical, declared value $800 (Screened), permit 7016972-EL

2023-09-07: Electrical, declared value $52,534 (Screened), permit 6984693-EL

2023-08-10: Other, declared value $20,000 (Screened), permit 6980259-RF

2023-05-26: Electrical, declared value $1,000 (Screened), permit 6966950-EL

2023-05-01: Remodel, declared value $1,294,000 (Revisit), permit 6917769-CN

Source: King County permit records (newest first).