30741 3rd Ave, Black Diamond, WA 98010

Retail · Black Diamond · Seattle-Bellevue metro, WA

One of 16 reachable retail buildings in Black Diamond. Larger than 94% of retail buildings in Black Diamond (median 4,369 SF), derived from assessor records.

Usable building area
27,954 SF, King County Assessor
County gross area
28,581 SF, King County Assessor
Excluded area
627 SF outside primary usable area
Lot size
277,191 SF, King County Assessor
Year built
2006, King County Assessor
Stories
1, King County Assessor
Buildings on parcel
2, King County Assessor
Predominant use
Retail(line/Strip), King County Assessor
Assessed value
$5,944,800, per the King County Assessor (not a market appraisal)
Assessed value per usable SF
$212.66/SF, derived from assessor records
Usable area / lot
0.1, derived from assessor records
Vintage
2000s vintage
Zoning
CC, King County
County use code
Retail(Line/Strip)

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: $9.08M (estimated market value), with a likely range of $6.5M to $11.4M (half of recent verified sales in this segment landed inside that range). Based on 4 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 12.4 mi. This property type carries wider measured error; treat the estimate as a starting point.

Comparable sales used as evidence

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: 1997-05-30 for $335,000 (recorded arm's-length sale).

Current ownership dates to 1997 (about 29 years) per recorded transfers.

Source: King County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.

Value over time

$0$5M$10M$15M201120142017202020232026$9.08M$5.94MCounty assessed valueMakeMe Estimate range

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 $2,088,000 (2011) to $5,944,800 (2026), up 185% over 15 years, per county tax rolls. The 2026 roll splits $5,944,800 into $1,539,500 land and $4,405,300 improvements.

Taxes

Permit history

Source: King County permit records (newest first).