601 108th Ave NE, Bellevue, WA 98004

Office · Bellevue · 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 AI estimate from public imagery; may be outdated.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 308 reachable office buildings in Bellevue. Larger than 96% of office buildings in Bellevue (median 23,608 SF), derived from assessor records.

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Building size: 773,359 SF, King County Assessor
Lot size: 40,175 SF, King County Assessor
Year built: 2000, King County Assessor
Stories: 21, King County Assessor
Predominant use: Key Center, King County Assessor
Assessed value: $172,106,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $222.54/SF, derived from assessor records
Lot coverage: 1925%, derived from assessor records
Vintage: 2000s vintage
Zoning: DT-O-1, King County
County use code: Office Building
Construction (observed): steel glass, AI estimate from public imagery
Parking (observed): none visible, 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.

555 108th Ave NE, Bellevue · 0.1 mi · 1,477,855 SF · built 2021 · assessed $269.74/SF
777 108th Ave NE, Bellevue · 0.1 mi · 672,713 SF · built 1986 · assessed $238.32/SF
550 106th Ave NE, Bellevue · 0.1 mi · 512,885 SF · built 1999 · assessed $253.58/SF
500 108th Ave NE, Bellevue · 0.1 mi · 723,028 SF · built 1986 · assessed $267.01/SF
788 106th Ave NE, Bellevue · 0.1 mi · 915,055 SF · built 2023 · assessed $176.86/SF
633 110th Ave NE, Bellevue · 0.1 mi · 1,676,169 SF · built 2024 · assessed $157.83/SF

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Sale history and market context

MakeMe Estimate: $156,255,341 (estimated market value), with a likely range of $141,216,097 to $203,593,314 (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.

Current ownership dates to 2011 (about 15 years) per recorded transfers.

2021-07-08: $47,000,000 from Sterling Realty Organization CO to Kilroy Realty LP (part of a 2-parcel sale; price is the whole deal), rec. 20210709001269

2011-06-03: $217,227,320 from Wa-Three Bellevue Center LLC to Kilroy Realty L P (part of a 2-parcel sale; price is the whole deal), rec. 20110606000062

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 $121,495,000 (2011) to $172,106,000 (2026), up 42% over 15 years, per county tax rolls. The 2026 roll splits $172,106,000 into $32,140,000 land and $139,966,000 improvements.

Zoning: DT-O-1 (per King County)

Lot: 40,175 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 466,504 SF; Underground Parking Structure 295,460 SF; Retail Store 11,395 SF (county building sections)

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

Permit history

2025-05-22: Remodel, declared value $1,700,000 (Revisit), permit 25 105966 BZ

2025-04-02: Remodel, declared value $1,500,000 (Revisit), permit 25 103725 BZ

2024-11-15: Remodel, declared value $300,000 (Screened), permit 24 122675 BZ

2024-08-14: Remodel, declared value $3,184,100 (Screened), permit 24 112086 BZ

2024-04-10: Remodel, declared value $608,610 (Screened), permit 24 105431 BZ

2022-10-05: Remodel, declared value $35,595 (Screened), permit 22 117997 BZ

2022-07-01: Remodel, declared value $547,762 (Screened), permit 22 112799 BZ

2022-06-13: Accessory, New, declared value $94,872 (Screened), permit 22 105107 BW

2022-06-08: Remodel, declared value $608,678 (Screened), permit 22 111194 BZ

2020-10-12: Demolition, declared value $300,000 (Complete), permit 20 114106 BE

Source: King County permit records (newest first).