516 E Union St, Seattle, WA 98122

Multifamily · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: mid-rise apartment, 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 AI estimate from public imagery; may be outdated.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 79% of multifamily buildings in Seattle (median 9,444 SF), derived from assessor records.

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Building size: 27,792 SF, King County Assessor
Lot size: 10,000 SF, King County Assessor
Year built: 1924, King County Assessor
Stories: 3, King County Assessor
Predominant use: Belmont Apts, King County Assessor
Units: 42, King County Assessor
Assessed value: $6,958,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $250.36/SF, derived from assessor records
Lot coverage: 278%, derived from assessor records
Vintage: pre-war vintage
Zoning: MR (M), 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): mid block, AI estimate from public imagery

Nearby comparable buildings

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

500 E Union St, Seattle · 0 mi · 10,020 SF · built 1910 · assessed $337.92/SF
1417 Belmont Ave, Seattle · 0 mi · 8,665 SF · built 1964 · assessed $274.21/SF
604 E Union St, Seattle · 0 mi · 67,304 SF · built 1925 · assessed $233.37/SF
501 E Pike St, Seattle · 0 mi · 118,110 SF · built 2016 · assessed $309.26/SF
1412 Summit Ave, Seattle · 0 mi · 23,600 SF · built 1908 · assessed $369.03/SF
1320 University St, Seattle · 0 mi · 41,921 SF · built 2019 · assessed $368.14/SF

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Sale history and market context

MakeMe Estimate: $6,425,519 (estimated market value), with a likely range of $5,703,852 to $7,329,730 (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 $153K per unit at the midpoint (42 units).

Last sold: 2004-01-14 for $3,410,500 (recorded arm's-length sale).

Current ownership dates to 2004 (about 22 years) per recorded transfers.

2005-11-05: transfer from Abonita Partners Limited Partnership to Abonita LLC (non-market transfer), rec. 20051201001694

2004-01-14: $3,410,500 from Davis Family Enterprises LLC to Belmont Apartment Partners LLC, rec. 20040130000759

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 $3,410,500 (2011) to $6,958,000 (2026), up 104% over 15 years, per county tax rolls. The 2026 roll splits $6,958,000 into $4,000,000 land and $2,958,000 improvements.

Zoning: MR (M) (per King County)

Lot: 10,000 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Multiple Residence (Low Rise) 27,792 SF (county building sections)

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