450 Shattuck Ave S, Renton, WA 98057

Office · Renton · 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 AI estimate from public imagery; may be outdated.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 227 reachable office buildings in Renton. Larger than 81% of office buildings in Renton (median 7,789 SF), derived from assessor records.

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Building size: 42,209 SF, King County Assessor
Lot size: 41,942 SF, King County Assessor
Year built: 1920, King County Assessor
Stories: 4, King County Assessor
Predominant use: Former Milwaukee Substation, King County Assessor
Assessed value: $7,726,600, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $183.06/SF, derived from assessor records
Lot coverage: 101%, derived from assessor records
Vintage: pre-war vintage
Zoning: CD, King County
County use code: Office Building
Construction (observed): masonry, 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.

405 S 4th St, Renton · 0.1 mi · 1,246 SF · built 1902 · assessed $319.98/SF
419 S 4th St, Renton · 0.1 mi · 1,500 SF · built 1958 · assessed $375/SF
529 Shattuck Ave S, Renton · 0.1 mi · 1,360 SF · built 1950 · assessed $320/SF
557 Shattuck Ave S, Renton · 0.1 mi · 1,060 SF · built 1949 · assessed $387.64/SF
344 Morris Ave S, Renton · 0.1 mi · 1,344 SF · built 1908 · assessed $380.88/SF
340 Morris Ave S, Renton · 0.2 mi · 1,044 SF · built 1938 · assessed $350/SF

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Sale history and market context

MakeMe Estimate: $8,488,226 (estimated market value), with a likely range of $8,265,867 to $11,215,285 (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.

Current ownership dates to 2000 (about 26 years) per recorded transfers.

2000-09-23: transfer from Private party to Private party (part of a 2-parcel sale; price is the whole deal), rec. 20001016000659

2000-09-18: $1,700,000 from Private party to Team Properties LLC (part of a 2-parcel sale; price is the whole deal), rec. 20001016000660

1999-12-16: $565,178 from Private party to Private party (part of a 2-parcel sale; price is the whole deal), rec. 20000217000330

1998-03-17: $900,000 from Private party to Private party (part of a 2-parcel sale; price is the whole deal), rec. 199803171309

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 $3,906,700 (2011) to $7,726,600 (2026), up 98% over 15 years, per county tax rolls. The 2026 roll splits $7,726,600 into $1,761,500 land and $5,965,100 improvements.

Zoning: CD (per King County)

Lot: 41,942 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 40,613 SF; Basement, Storage 1,596 SF (county building sections)

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

Permit history

2026-04-30: Electrical, declared value $8,000, permit E26002204

2026-02-09: Electrical, declared value $12,000, permit E26000666

2026-01-06: Remodel, declared value $10,000, permit B25006390

2023-10-09: Electrical, declared value $18,500 (Screened), permit E23005140

2022-03-24: Electrical, declared value $3,400 (Defunct), permit E22001489

2022-03-22: Electrical, declared value $1,000 (Defunct), permit E22001283

2022-01-05: Remodel, declared value $15,000 (Complete), permit B21002729

2021-09-13: Electrical, declared value $1,800 (Complete), permit E21004424

2021-08-19: Electrical, declared value $5,500 (Complete), permit E21004011

2021-08-06: Other, declared value $5,000 (Defunct), permit M21003774

Source: King County permit records (newest first).