26705 Maple Valley Black Diamond Rd SE, Maple Valley, WA 98038
Retail · Maple Valley · Seattle-Bellevue metro, WA
One of 52 reachable retail buildings in Maple Valley. Larger than 73% of retail buildings in Maple Valley (median 6,230 SF), derived from assessor records.
Usable building area
14,820 SF, King County Assessor
Lot size
68,089 SF, King County Assessor
Year built
2014, King County Assessor
Stories
1, King County Assessor
Predominant use
Retail(line/Strip), King County Assessor
Assessed value
$4,375,800, per the King County Assessor (not a market appraisal)
Assessed value per usable SF
$295.26/SF, derived from assessor records
Usable area / lot
0.22, derived from assessor records
Vintage
2010s vintage
Zoning
TC, King County
County use code
Retail(Line/Strip)
Nearby comparable buildings
Same building type, by distance. Assessor facts only; not an opinion of value.
MakeMe Estimate: $5.34M (estimated market value), with a likely range of $4.15M to $6.41M (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: 0 comparable sales within 3 miles; nearest 4 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.
Current ownership dates to 2015 (about 11 years) per recorded transfers.
2025-01-28: transfer from Roic Four Corner Square LLC to B10 Mountain B Wa LLC (part of a 6-parcel sale; price is the whole deal), rec.
2015-12-21: $41,500,000 from Private party to Private party (part of a 6-parcel sale; price is the whole deal), rec. 20151221000631
2006: transferred to Maple Valley City of Department of Public Works, no consideration (3 recorded transfers, 2005 to 2006)
2004-12-20: $10,390,000 from Four Corner Square A LP to KRG Four Corner Square LLC (part of a 4-parcel sale; price is the whole deal), rec. 20041220002934
1991-01-18: transfer from Private party to Private party (part of a 4-parcel sale; price is the whole deal), rec. 199711041091
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. Not an appraisal. How this estimate works.
Land, site, and value history
Assessed value moved from $2,311,500 (2011) to $4,375,800 (2026), up 89% over 15 years, per county tax rolls. The 2026 roll splits $4,375,800 into $1,974,500 land and $2,401,300 improvements.
Zoning: TC (per King County)
Lot: 68,089 sq ft
Water: Water District (per King County)
Sewer: Public (per King County)
Access: Public
Street surface: Paved
Floor and use mix: Drug Store 14,820 SF (county building sections)