601 S Washington St, Seattle, WA 98104

Multifamily · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: mid-rise apartments, 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 AI estimate from public imagery; may be outdated.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 94% of multifamily buildings in Seattle (median 9,444 SF), derived from assessor records.

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Building size: 97,737 SF, King County Assessor
Lot size: 15,360 SF, King County Assessor
Year built: 1991, King County Assessor
Stories: 5, King County Assessor
Predominant use: Metropolitan Park, King County Assessor
Units: 83, King County Assessor
Assessed value: $24,100,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $246.58/SF, derived from assessor records
Lot coverage: 636%, derived from assessor records
Vintage: 1990s vintage
Zoning: IDR 170, King County
County use code: Apartment
Construction (observed): wood frame, AI estimate from public imagery
Parking (observed): structured, AI estimate from public imagery
Frontage (observed): mid block, AI estimate from public imagery

Nearby comparable buildings

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

202 6th Ave S, Seattle · 0 mi · 76,094 SF · built 1973
120 6th Ave S, Seattle · 0 mi · 134,974 SF · built 2005 · assessed $199.72/SF
651 S Main St, Seattle · 0.1 mi · 67,590 SF · built 2005 · assessed $218.66/SF
100 6th Ave S, Seattle · 0.1 mi · 27,600 SF · built 1903 · assessed $257.64/SF
614 S Jackson St, Seattle · 0.1 mi · 27,494 SF · built 1910 · assessed $145.97/SF
520 S Main St, Seattle · 0.1 mi · 74,327 SF · built 1979 · assessed $197/SF

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Sale history and market context

MakeMe Estimate: $24,040,267 (estimated market value), with a likely range of $21,958,486 to $24,809,753 (half of recent verified sales in this segment landed inside that range). Based on 98 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works. About $290K per unit at the midpoint (83 units).

Last sold: 2012-06-21 for $15,339,250 (recorded arm's-length sale).

Current ownership dates to 2012 (about 14 years) per recorded transfers.

2012-06-21: $15,339,250 from Metropolitan Associates LLC to Sea Washington 2010 LLC, rec. 20120628000409

2008-01-28: $15,988,500 from Metropolitan Park Apartments Limited Partnership to Metropolitan Associates LLC, rec. 20080130001207

1999-12-24: $6,918,000 from Erp Operating Limited Partnership to Metropolitan Park Apartments (non-market transfer), rec. 19991228001143

1997-05-30: transfer from Holly Property Holdings INC to Erp Operating Limited Partnership (part of a 73-parcel sale; price is the whole deal), rec. 199706170000

1993-06-18: $6,490,400 from Highlands Apartments to Holly Property Holdings INC, rec. 199306181186

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 $12,346,000 (2011) to $24,100,000 (2026), up 95% over 15 years, per county tax rolls. The 2026 roll splits $24,100,000 into $5,760,000 land and $18,340,000 improvements.

Zoning: IDR 170 (per King County)

Lot: 15,360 sq ft

Rated views: Olympic Mountains, Territorial, Seattle skyline, Puget Sound

Nuisance flags: Traffic noise

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Apartment 58,015 SF; Basement, Parking 39,722 SF (county building sections)

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

Permit history

2025-05-29: Other, declared value $23,817 (Screened), permit 7088417-RF

2025-05-21: Electrical, declared value $3,200 (Screened), permit 7087099-EL

2024-12-02: Electrical, declared value $16,000 (Revisit), permit 7058882-EL

2021-09-24: Remodel, declared value $25,000 (Screened), permit 6832482-CN

2017-04-03: Remodel, declared value $25,000 (Screened), permit 6589522

2015-04-17: Remodel, declared value $50,228 (Screened), permit 6443333

Source: King County permit records (newest first).