315 2nd Ave S, Seattle, WA 98104

Office · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: historic mixed-use 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 AI estimate from public imagery; may be outdated.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 54% of office buildings in Seattle (median 20,410 SF), derived from assessor records.

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Building size: 25,920 SF, King County Assessor
Lot size: 6,480 SF, King County Assessor
Year built: 1900, King County Assessor
Stories: 3, King County Assessor
Predominant use: Office Building, King County Assessor
Assessed value: $4,588,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $177.01/SF, derived from assessor records
Lot coverage: 400%, derived from assessor records
Vintage: pre-war vintage
Zoning: PSM 100/100-120, 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.

312 2nd Ave S, Seattle · 0 mi · 25,954 SF · built 1900 · assessed $283.55/SF
300 Occidental Ave S, Seattle · 0 mi · 164,380 SF · built 1900 · assessed $100.51/SF
319 2nd Ave S, Seattle · 0 mi · 26,000 SF · built 1966 · assessed $245/SF
171 S Jackson St, Seattle · 0 mi · 71,280 SF · built 1900 · assessed $165.86/SF
400 Occidental Ave S, Seattle · 0 mi · 93,240 SF · built 1900 · assessed $173/SF
307 3rd Ave S, Seattle · 0.1 mi · 41,920 SF · built 1906 · assessed $116.89/SF

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Sale history and market context

MakeMe Estimate: $4,807,198 (estimated market value), with a likely range of $4,681,267 to $6,351,633 (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.

Last sold: 2025-09-15 for $6,000,000 (recorded arm's-length sale).

Current ownership dates to 2025 per recorded transfers.

2025-09-15: $6,000,000 from Duncan BLDG Investments LLC to King County, rec. 20250917000315

2013-09-09: $4,575,000 from Duncan Building LLC to Ducan BLDG Investments LLC, rec. 20130916000846

2002-11-04: transfer from Private party to Duncan Building LLC Attn: Greg Elderkin (non-market transfer), rec. 20021114000861

2000-02-28: $2,950,000 from Private party to Private party, rec. 20000303000235

1992-01-27: transfer from Private party to Private party (non-market transfer), rec. 199201292412

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 $3,710,300 (2011) to $4,588,000 (2026), up 24% over 15 years, per county tax rolls. The 2026 roll splits $4,588,000 into $2,916,000 land and $1,672,000 improvements.

Zoning: PSM 100/100-120 (per King County)

Lot: 6,480 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 12,960 SF; Restaurant, Table Service 6,480 SF; Basement, Storage 6,480 SF (county building sections)

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

Permit history

2018-02-13: Remodel, declared value $300,000 (Screened), permit 6645276

2015-07-10: Remodel, declared value $180,000 (Defunct), permit 6483095

2012-06-20: Remodel, declared value $218,000 (Complete), permit 6317894

2006-07-10: Remodel, declared value $210,000 (Screened), permit 6096313

2003-09-25: Remodel, declared value $450,000 (Complete), permit 738095

Source: King County permit records (newest first).