Office · Mercer Island · Seattle-Bellevue metro, WA
One of 34 reachable office buildings in Mercer Island. Larger than 15% of office buildings in Mercer Island (median 11,827 SF), derived from assessor records.
Usable building area
5,006 SF, King County Assessor
Lot size
14,910 SF, King County Assessor
Year built
1961, King County Assessor
Stories
2, King County Assessor
Predominant use
Office, King County Assessor
Assessed value
$3,236,800, per the King County Assessor (not a market appraisal)
Assessed value per usable SF
$646.58/SF, derived from assessor records
Usable area / lot
0.34, derived from assessor records
Vintage
1960s vintage
Zoning
TC, King County
County use code
Office Building
Nearby comparable buildings
Same building type, by distance. Assessor facts only; not an opinion of value.
MakeMe Estimate: $3.39M (estimated market value), with a likely range of $2.99M to $3.92M (half of recent verified sales in this segment landed inside that range). Based on 8 verified arm's-length comparable sales (through 2026-06-01). Not an appraisal. How this estimate works.
lower confidence: 1 comparable sale within 3 miles; nearest 2.6 mi. This property type carries wider measured error; treat the estimate as a starting point.
Recorded arm's-length sales of similar buildings nearby; nearer and more recent sales rank first. Buyer and seller names are withheld. Get this data via API.
Last sold: 2015-02-24 for $2,115,000 (recorded arm's-length sale).
Current ownership dates to 2015 (about 11 years) per recorded transfers.
2015-02-24: $2,115,000 from Private party to Shanyu LLC, rec. 20150227000587
7 administrative transfers (no consideration), 1986 to 2009
Source: King County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.
Value over time
Dark line: county assessed value per King County tax rolls. Blue line: our estimate; dashed years are a modeled backcast built from recorded arm's-length sales in the building's segment, not estimates published at the time, and years without enough sales stay unmodeled. The shaded range is the model's measured error band; about half of verified sales in the segment land inside it. Diamonds: recorded arm's-length sales. Not an appraisal. How this estimate works.
Land, site, and value history
Assessed value moved from $1,193,800 (2011) to $3,236,800 (2026), up 171% over 15 years, per county tax rolls. The 2026 roll splits $3,236,800 into $2,683,800 land and $553,000 improvements.
Zoning: TC (per King County)
Lot: 14,910 sq ft
Water: Water District (per King County)
Sewer: Public (per King County)
Access: Public
Street surface: Paved
Floor and use mix: Office Building 4,250 SF; Storage Warehouse 756 SF (county building sections)