1200 3rd Ave, Seattle, WA 98101

Office · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: urban office 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 AI estimate from public imagery; may be outdated.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 957 reachable office buildings in Seattle. Larger than 83% of office buildings in Seattle (median 20,410 SF), derived from assessor records.

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Building size: 189,175 SF, King County Assessor
Lot size: 13,320 SF, King County Assessor
Year built: 1921, King County Assessor
Stories: 13, King County Assessor
Predominant use: Ofc & Excg, King County Assessor
Assessed value: $29,410,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $155.46/SF, derived from assessor records
Lot coverage: 1420%, derived from assessor records
Vintage: pre-war vintage
Zoning: DOC1 U/450/U, King County
County use code: Office Building
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.

1218 3rd Ave, Seattle · 0 mi · 216,571 SF · built 1929 · assessed $164.32/SF
1201 3rd Ave, Seattle · 0 mi · 1,413,575 SF · built 1988 · assessed $229.44/SF
1111 3rd Ave, Seattle · 0.1 mi · 776,762 SF · built 1980 · assessed $177.59/SF
1110 3rd Ave, Seattle · 0.1 mi · 186,768 SF · built 1972 · assessed $173.50/SF
301 Union St, Seattle · 0.1 mi · 56,550 SF · built 1959
1325 4th Ave, Seattle · 0.1 mi · 424,690 SF · built 1960

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Sale history and market context

MakeMe Estimate: $26,797,395 (estimated market value), with a likely range of $24,218,203 to $34,915,737 (half of recent verified sales in this segment landed inside that range). Based on 12 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 2005-03-29 for $21,000,000 (recorded arm's-length sale).

Current ownership dates to 2005 (about 21 years) per recorded transfers.

2005-03-29: $21,000,000 from Seattle Telecom Properties LLC to Expeditors International of Washington INC, rec. 20050331001741

2002-08-16: $25,423,298 from Hewm Corporate Services INC to Seattle Telecom Properties LLC (non-market transfer), rec. 20020816001814

1999-09-24: $33,805,000 from US West Communications INC to Seattle Telecom LLC, rec. 19990924001583

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 $24,571,000 (2011) to $29,410,000 (2026), up 20% over 15 years, per county tax rolls. The 2026 roll splits $29,410,000 into $21,312,000 land and $8,098,000 improvements.

Zoning: DOC1 U/450/U (per King County)

Lot: 13,320 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 189,175 SF (county building sections)

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

Permit history

2016-06-11: Remodel, declared value $1,000,000 (Screened), permit 6526584

2014-03-06: Remodel, declared value $150,000 (Complete), permit 6392245

2009-09-04: Remodel, declared value $120,000 (Complete), permit 6217021

2000-06-21: Remodel, declared value $3,000,000 (Screened), permit 714278

Source: King County permit records (newest first).