517 3rd Ave, Seattle, WA 98104

Commercial · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: urban mixed-use building, appears multi-tenant. AI estimate from public imagery. In recent public imagery (2026-06), the building appears serviceable with visible wear. AI estimate from public imagery; may be outdated.

One of 1,256 reachable commercial buildings in Seattle. Larger than 92% of commercial buildings in Seattle (median 13,352 SF), derived from assessor records.

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Building size: 159,840 SF, King County Assessor
Lot size: 19,980 SF, King County Assessor
Year built: 1908, King County Assessor
Stories: 7, King County Assessor
Predominant use: 230 Unit Low Income Apartments, King County Assessor
Assessed value: $21,226,300, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $132.80/SF, derived from assessor records
Lot coverage: 800%, derived from assessor records
Vintage: pre-war vintage
Zoning: PSM 100/100-120, King County
County use code: Group Home
Construction (observed): masonry, AI estimate from public imagery
Parking (observed): none visible, 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.

516 3rd Ave, Seattle · 0 mi · 540,360 SF · built 1916
601 3rd Ave, Seattle · 0.1 mi · 63,712 SF · built 1910 · assessed $283.02/SF
612 2nd Ave, Seattle · 0.1 mi · 163,984 SF · built 1904 · assessed $333.99/SF
500 4th Ave, Seattle · 0.1 mi · 224,857 SF · built 1971
700 3rd Ave, Seattle · 0.1 mi · 104,352 SF · built 1916 · assessed $293.07/SF
318 2nd Ave Ext S, Seattle · 0.1 mi · 29,820 SF · built 1904 · assessed $106.61/SF

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Sale history and market context

MakeMe Estimate: $21,455,641 (estimated market value), with a likely range of $18,181,466 to $25,959,282 (half of recent verified sales in this segment landed inside that range). Based on 33 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 2004-08-16 for $702,900 (recorded arm's-length sale).

Current ownership dates to 2018 (about 8 years) per recorded transfers.

2 administrative transfers (no consideration), 2023 to 2023

2021-10-29: $1,059,000 from Downtown Emergency Service Center to S-Qozb LLC, rec. 20211112002065

2021-10-29: $70,800 from Downtown Emergency Service Center to S-Qozb LLC, rec. 20211112002066

2018-12-01: transfer from Morrison Hotel LLC to Downtown Emergency Service Center (non-market transfer), rec.

2004-08-16: $702,900 from Morrison Hotel LLC to 1301 Second Ave LLC, rec. 20040817003434

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 $14,583,000 (2011) to $21,226,300 (2026), up 46% over 15 years, per county tax rolls. The 2026 roll splits $21,226,300 into $7,894,000 land and $13,332,300 improvements.

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

Lot: 19,980 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Group Care Home 119,880 SF; Basement, Parking 19,980 SF; Open Office 19,980 SF (county building sections)

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

Permit history

2025-09-09: Electrical, declared value $2,967 (Screened), permit 7105697-EL

2024-10-02: Electrical, declared value $628 (Screened), permit 7048968-EL

2024-08-12: Remodel, declared value $1,462,872 (Screened), permit 6917583-CN

2023-09-26: Electrical, declared value $847 (Screened), permit 6987814-EL

2023-06-15: Electrical, declared value $10,330 (Screened), permit 6970674-EL

2018-12-04: Remodel, declared value $200,000 (Screened), permit 6700394-CN

2016-07-27: Remodel, declared value $400,000 (Complete), permit 6541924

2007-06-11: Remodel, declared value $450,000 (Complete), permit 6133563

2005-11-22: Remodel, declared value $1,300,000 (Screened), permit 753244

2003-06-05: Remodel, declared value $8,313,000 (Complete), permit 735590

Source: King County permit records (newest first).