8103 8th Ave S, Seattle, WA 98108

Small-Bay Industrial · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: multi-tenant light industrial, 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 AI estimate from public imagery; may be outdated.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 1,229 reachable small-bay industrial buildings in Seattle. Larger than 27% of small-bay industrial buildings in Seattle (median 14,469 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: 7,516 SF, King County Assessor
Lot size: 10,000 SF, King County Assessor
Year built: 2012, King County Assessor
Stories: 2, King County Assessor
Buildings on parcel: 2, King County Assessor
Predominant use: Artist Workshop, King County Assessor
Assessed value: $1,621,900, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $215.79/SF, derived from assessor records
Lot coverage: 75%, derived from assessor records
Vintage: 2010s vintage
Zoning: UI U/45, King County
County use code: Industrial(Lignt)
Construction (observed): metal, 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.

747 S Monroe St, Seattle · 0 mi · 3,508 SF · built 1990 · assessed $231.01/SF
741 S Elmgrove St, Seattle · 0.1 mi · 3,600 SF · built 2000 · assessed $241.06/SF
735 S Monroe St, Seattle · 0.1 mi · 4,802 SF · built 1977 · assessed $229.05/SF
740 S Monroe St, Seattle · 0.1 mi · 3,600 SF · built 1974 · assessed $167.97/SF
746 S Monroe St, Seattle · 0.1 mi · 3,870 SF · built 2020 · assessed $263.95/SF
734 S Monroe St, Seattle · 0.1 mi · 4,000 SF · built 1975 · assessed $167.98/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: $2,327,873 (estimated market value), with a likely range of $1,634,729 to $2,578,122 (half of recent verified sales in this segment landed inside that range). Based on 86 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 2001-06-14 for $205,000 (recorded arm's-length sale).

Current ownership dates to 2015 (about 11 years) per recorded transfers.

2015-05-16: transfer from Private party to 8103 Spark LLC (non-market transfer), rec. 20150708000130

2001-06-14: $205,000 from Private party to Private party, rec. 20010628002220

1995-01-25: $87,500 from Private party to Private party, rec. 199501260554

1994-01-24: transfer from Private party to Private party (non-market transfer), rec. 199501260553

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 $320,700 (2011) to $1,621,900 (2026), up 406% over 15 years, per county tax rolls. The 2026 roll splits $1,621,900 into $550,000 land and $1,071,900 improvements.

Zoning: UI U/45 (per King County)

Lot: 10,000 sq ft

Nuisance flags: Traffic noise

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Industrial Light Manufacturing 5,534 SF; Apartment 1,022 SF (county building sections)

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

Permit history

2016-09-27: Remodel, declared value $41,301 (Complete), permit 6504214

2016-07-05: Remodel, declared value $50,000 (Complete), permit 6453535

2012-05-24: Remodel, declared value $328,753 (Complete), permit 6065425

2012-05-24: Demolition (Complete), permit 6310647

2001-08-30: Accessory, New, declared value $84,832 (Complete), permit 722958

Source: King County permit records (newest first).