31205 3rd Ave, Black Diamond, WA 98010
Small-Bay Industrial · Black Diamond · Seattle-Bellevue metro, WA
One of 10 reachable small-bay industrial buildings in Black Diamond. Larger than 70% of small-bay industrial buildings in Black Diamond (median 2,939 SF), derived from assessor records.
- Usable building area
- 14,280 SF, King County Assessor
- Lot size
- 104,283 SF, King County Assessor
- Year built
- 1975, King County Assessor
- Stories
- 1, King County Assessor
- Buildings on parcel
- 2, King County Assessor
- Predominant use
- Service Building, King County Assessor
- Assessed value
- $1,587,000, per the King County Assessor (not a market appraisal)
- Assessed value per usable SF
- $111.13/SF, derived from assessor records
- Usable area / lot
- 0.14, derived from assessor records
- Vintage
- 1970s vintage
- Zoning
- CC, King County
- County use code
- Service Building
Nearby comparable buildings
Same building type, by distance. Assessor facts only; not an opinion of value.
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Sale history and market context
MakeMe Estimate: $2.61M (estimated market value), with a likely range of $1.89M to $3.23M (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 8.2 mi. This property type carries wider measured error; treat the estimate as a starting point.
Comparable sales used as evidence
- 1920 Garrett St, Enumclaw: $7,900,000 (2026-03), 36,171 SF, $218.41/SF, built 1970, 8.2 mi away (different city)
- 2019 I St NE, Auburn: $2,400,000 (2024-12), 5,388 SF, $445.43/SF, built 1974, 9.8 mi away (different city)
- 722 40th St NE, Auburn: $1,050,000 (2024-08), 4,680 SF, $224.36/SF, built 1984, 10 mi away (different city)
- 4715 Auburn Way N, Auburn: $2,500,000 (2024-12), 7,911 SF, $316.02/SF, built 1987, 10.3 mi away (different city)
- 640 1st St SW, Auburn: $1,050,000 (2026-01), 7,252 SF, $144.79/SF, built 1955, 10.8 mi away (different city)
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 2012 (about 14 years) per recorded transfers.
- 2012-12-26: $610,000 from Private party to JMS Diamond LLC, rec.
- 3 administrative transfers (no consideration), 1997 to 2012
Source: King County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.
Land, site, and value history
Assessed value moved from $469,400 (2011) to $1,587,000 (2026), up 238% over 15 years, per county tax rolls. The 2026 roll splits $1,587,000 into $677,800 land and $909,200 improvements.
- Zoning: CC (per King County)
- Lot: 104,283 sq ft
- Water: Water District (per King County)
- Sewer: Public (per King County)
- Access: Public
- Street surface: Paved
- Floor and use mix: Storage Warehouse 13,080 SF; Discount Store 1,200 SF (county building sections)
- County districts report (schools, fire, sewer, council; on kingcounty.gov)