5901 20th Ave NW, Seattle, WA 98107

Multifamily · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: modern residential building, 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 AI estimate from public imagery; may be outdated.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 49% 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: 9,166 SF, King County Assessor
Lot size: 7,800 SF, King County Assessor
Year built: 1959, King County Assessor
Stories: 2, King County Assessor
Predominant use: 5901 Apartments, King County Assessor
Units: 13, King County Assessor
Assessed value: $3,107,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $338.97/SF, derived from assessor records
Lot coverage: 118%, derived from assessor records
Vintage: 1950s vintage
Zoning: LR2 (M), King County
County use code: Apartment
Parking (observed): street only, AI estimate from public imagery

Nearby comparable buildings

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

2024 NW 59th St, Seattle · 0 mi · 4,680 SF · built 1978 · assessed $305.98/SF
2018 NW 59th St, Seattle · 0 mi · 4,680 SF · built 1979 · assessed $305.98/SF
2032 NW 59th St, Seattle · 0 mi · 5,256 SF · built 1967 · assessed $269.60/SF
2021 NW 59th St, Seattle · 0 mi · 7,239 SF · built 1997 · assessed $225.45/SF
5815 20th Ave NW, Seattle · 0 mi · 5,019 SF · built 1974 · assessed $279.14/SF
2040 NW 59th St, Seattle · 0 mi · 5,772 SF · built 1969 · assessed $278.59/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.

Sale history and market context

MakeMe Estimate: $3,046,013 (estimated market value), with a likely range of $2,703,908 to $3,474,654 (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 $234K per unit at the midpoint (13 units).

Last sold: 2006-11-29 for $1,433,500 (recorded arm's-length sale).

Current ownership dates to 2017 (about 9 years) per recorded transfers.

2017-02-21: transfer from Private party to Gallagher 5901 LLC, rec. 20170317000463

2006-11-29: $1,433,500 from Private party to Private party, rec. 20061130003197

2005-04-01: transfer from Private party to Private party (non-market transfer), rec. 20050405000164

2004-03-17: $1,162,750 from Private party to Private party, rec. 20040405000976

1999-07-06: $937,000 from Geg Partners II to Private party, rec. 19990715000794

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 $1,208,000 (2011) to $3,107,000 (2026), up 157% over 15 years, per county tax rolls. The 2026 roll splits $3,107,000 into $1,755,000 land and $1,352,000 improvements.

Zoning: LR2 (M) (per King County)

Lot: 7,800 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) 9,166 SF (county building sections)

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