5320 28th Ave NW, Seattle, WA 98107

Commercial · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: waterfront industrial / boat storage, 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 AI estimate from public imagery; may be outdated.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 44% of commercial buildings in Seattle (median 13,352 SF), derived from assessor records.

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Building size: 10,019 SF, King County Assessor
Lot size: 89,488 SF, King County Assessor
Year built: 1965, King County Assessor
Stories: 2, King County Assessor
Buildings on parcel: 3, King County Assessor
Predominant use: Offfice, King County Assessor
Assessed value: $6,129,400, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $611.78/SF, derived from assessor records
Lot coverage: 11%, derived from assessor records
Vintage: 1960s vintage
Zoning: MML U/65, King County
County use code: Marina
Construction (observed): masonry, AI estimate from public imagery
Parking (observed): surface lot, AI estimate from public imagery

Nearby comparable buildings

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

5355 28th Ave NW, Seattle · 0 mi · 3,955 SF · built 1948 · assessed $419.67/SF
5350 30th Ave NW, Seattle · 0.1 mi · 33,200 SF · built 1977 · assessed $114.30/SF
2655 NW Market St, Seattle · 0.1 mi · 57,735 SF · built 2017 · assessed $739.55/SF
5300 26th Ave NW, Seattle · 0.1 mi · 9,765 SF · built 1910 · assessed $463.51/SF
2651 NW 56th St, Seattle · 0.1 mi · 12,519 SF · built 2015 · assessed $397/SF
3025 NW 54th St, Seattle · 0.2 mi · 35,000 SF · built 1916

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Sale history and market context

MakeMe Estimate: $6,458,166 (estimated market value), with a likely range of $5,472,636 to $7,896,125 (half of recent verified sales in this segment landed inside that range). Based on 139 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

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

2017-09-29: transfer from Tec Holdings 76 LLC to Explorer Properties LLC (part of a 2-parcel sale; price is the whole deal), rec. 20170929002048

2017-03-30: $5,000,000 from Private party to Tec Holdings 76 LLC (part of a 2-parcel sale; price is the whole deal), rec. 20170403001142

2 administrative transfers (no consideration), 1997 to 1997

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 $1,914,400 (2011) to $6,129,400 (2026), up 220% over 15 years, per county tax rolls. The 2026 roll splits $6,129,400 into $3,708,700 land and $2,420,700 improvements.

Zoning: MML U/65 (per King County)

Lot: 89,488 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Storage Warehouse 10,019 SF (county building sections)

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