1018 1st Ave, Seattle, WA 98104

Office · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: mid-rise office, 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 AI estimate from public imagery; may be outdated.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 63% of office buildings in Seattle (median 20,410 SF), derived from assessor records.

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Building size: 39,960 SF, King County Assessor
Lot size: 6,660 SF, King County Assessor
Year built: 1900, King County Assessor
Stories: 5, King County Assessor
Predominant use: Office Building With Retail On 1st Floor, King County Assessor
Assessed value: $8,152,800, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $204.02/SF, derived from assessor records
Lot coverage: 600%, derived from assessor records
Vintage: pre-war vintage
Zoning: DMC 240/290-440, King County
County use code: Historic Prop(Office)
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.

1101 2nd Ave, Seattle · 0 mi · 147,672 SF · built 1968 · assessed $376.11/SF
1012 1st Ave, Seattle · 0 mi · 39,200 SF · built 1900 · assessed $250.66/SF
1015 2nd Ave, Seattle · 0 mi · 232,045 SF · built 1950 · assessed $227.53/SF
1191 2nd Ave, Seattle · 0 mi · 635,303 SF · built 1991 · assessed $226.42/SF
1008 Western Ave, Seattle · 0.1 mi · 167,860 SF · built 1905 · assessed $135.36/SF
1000 2nd Ave, Seattle · 0.1 mi · 589,921 SF · built 1986 · assessed $203.80/SF

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Sale history and market context

MakeMe Estimate: $7,826,946 (estimated market value), with a likely range of $7,073,619 to $10,198,140 (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: 2013-10-24 for $7,400,000 (recorded arm's-length sale).

Current ownership dates to 2013 (about 13 years) per recorded transfers.

2020-09-11: $765,900 from Msi Holyoke LLC to Net Seattle LLC, rec. 20200911001872

2013-10-24: $7,400,000 from Dina Corporation to Msi Holyoke LLC, rec. 20131028001536

2004-05-19: $6,550,000 from Harbor Properties INC to Dina Corporation, rec. 20040524002092

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 $7,734,800 (2011) to $8,152,800 (2026), up 5% over 15 years, per county tax rolls. The 2026 roll splits $8,152,800 into $7,992,000 land and $160,800 improvements.

Zoning: DMC 240/290-440 (per King County)

Lot: 6,660 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 29,970 SF; Basement, Finished 6,660 SF; Retail Store 3,330 SF (county building sections)

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

Permit history

2015-07-08: Remodel, declared value $1,400,000 (Complete), permit 6475423

2015-06-03: Remodel, declared value $500,000 (Complete), permit 6477392

2011-06-17: Remodel, declared value $30,000 (Complete), permit 6283739

2000-11-03: Remodel, declared value $370,360 (Screened), permit 717172

Source: King County permit records (newest first).