3500 1st Ave NW, Seattle, WA 98107

Office · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: multi-story mixed-use, 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 AI estimate from public imagery; may be outdated.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 957 reachable office buildings in Seattle. Larger than 23% of office buildings in Seattle (median 20,410 SF), derived from assessor records.

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Building size: 5,446 SF, King County Assessor
Lot size: 6,794 SF, King County Assessor
Year built: 1979, King County Assessor
Stories: 2, King County Assessor
Predominant use: Office Building, King County Assessor
Assessed value: $1,848,700, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $339.46/SF, derived from assessor records
Lot coverage: 80%, derived from assessor records
Vintage: 1970s vintage
Zoning: IC-65 (M), King County
County use code: Office Building
Construction (observed): masonry, AI estimate from public imagery
Parking (observed): surface lot, 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.

115 N 36th St, Seattle · 0 mi · 3,791 SF · built 2009 · assessed $398.73/SF
118 N 35th St, Seattle · 0 mi · 6,229 SF · built 1992 · assessed $322.43/SF
203 N 36th St, Seattle · 0 mi · 7,718 SF · built 1963 · assessed $326.35/SF
123 N 35th St, Seattle · 0 mi · 1,601 SF · built 1901 · assessed $366.58/SF
309 N 36th St, Seattle · 0.1 mi · 8,866 SF · built 1900 · assessed $370.89/SF
118 NW Canal St, Seattle · 0.1 mi · 2,962 SF · built 2012 · assessed $454.32/SF

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Sale history and market context

MakeMe Estimate: $2,001,308 (estimated market value), with a likely range of $1,948,881 to $2,644,279 (half of recent verified sales in this segment landed inside that range). Based on 185 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Current ownership dates to 2014 (about 12 years) per recorded transfers.

2014-12-17: $3,400,000 from Vemo Properties LLC to Fremont Dock CO (part of a 2-parcel sale; price is the whole deal), rec.

3 administrative transfers (no consideration), 1987 to 2012

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 $947,200 (2011) to $1,848,700 (2026), up 95% over 15 years, per county tax rolls. The 2026 roll splits $1,848,700 into $1,222,900 land and $625,800 improvements.

Zoning: IC-65 (M) (per King County)

Lot: 6,794 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 5,446 SF (county building sections)

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