604 E Union St, Seattle, WA 98122
Multifamily · Seattle · Seattle-Bellevue metro, WA
Imagery suggests: walk_up_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 AI estimate from public imagery; may be outdated.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 91% of multifamily buildings in Seattle (median 9,444 SF), derived from assessor records.
Own this building?
Claim privately
Claiming is for you. Your mailing address is never shown; no offer reaches you unless you opt in.
Claimed owners can confirm facts, watch the estimate, and decide whether to reply.
Claim or manage this building- Building size
- 67,304 SF, King County Assessor
- Lot size
- 20,000 SF, King County Assessor
- Year built
- 1925, King County Assessor
- Stories
- 3, King County Assessor
- Predominant use
- Union Manor, King County Assessor
- Units
- 84, King County Assessor
- Assessed value
- $15,707,000, per the King County Assessor (not a market appraisal)
- Assessed value per building SF
- $233.37/SF, derived from assessor records
- Lot coverage
- 337%, 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.
- 1411 Boylston Ave, Seattle · 0 mi · 7,850 SF · built 1901 · assessed $277.83/SF
- 516 E Union St, Seattle · 0 mi · 27,792 SF · built 1924 · assessed $250.36/SF
- 1320 University St, Seattle · 0 mi · 41,921 SF · built 2019 · assessed $368.14/SF
- 1417 Belmont Ave, Seattle · 0 mi · 8,665 SF · built 1964 · assessed $274.21/SF
- 501 E Pike St, Seattle · 0.1 mi · 118,110 SF · built 2016 · assessed $309.26/SF
- 500 E Union St, Seattle · 0.1 mi · 10,020 SF · built 1910 · assessed $337.92/SF
Want to talk to the owner? makeme1031 delivers a private, principal-to-principal letter to the owner of record. We never publish the owner's identity or address.