24201 Roberts Dr, Black Diamond, WA 98010

Commercial · Black Diamond · Seattle-Bellevue metro, WA

One of 26 reachable commercial buildings in Black Diamond. Larger than 8% of commercial buildings in Black Diamond (median 5,035 SF), derived from assessor records.

Usable building area
1,304 SF, King County Assessor
County gross area
4,866 SF, King County Assessor
Excluded area
3,562 SF outside primary usable area
Lot size
37,897 SF, King County Assessor
Year built
1924, King County Assessor
Stories
1, King County Assessor
Buildings on parcel
2, King County Assessor
Predominant use
Nursery, King County Assessor
Assessed value
$524,500, per the King County Assessor (not a market appraisal)
Assessed value per usable SF
$402.22/SF, derived from assessor records
Usable area / lot
0.03, derived from assessor records
Vintage
pre-war vintage
Zoning
NC, King County
County use code
Greenhse/Nrsry/Hort Srvc

Nearby comparable buildings

Same building type, by distance. Assessor facts only; not an opinion of value.

Want to talk to the owner? makeme1031 delivers a private letter directly to the owner of record. We never publish the owner's identity or address.

Own this building?

Claim privately

Claiming is for you. Your mailing address is never shown; no offer reaches you unless you opt in.

Claimed owners can confirm facts, watch the estimate, and decide whether to reply.

Received a letter about this building? It came from a real buyer through makeme1031; claiming is how you reply privately, on your terms.

Claimed owners also get Portfolio Pulse: a monthly email tracking this building's value.

Claim or manage this building

Sale history and market context

MakeMe Estimate: $546K (estimated market value), with a likely range of $453K to $659K (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: 1 comparable sale within 3 miles; nearest 1.2 mi. This property type carries wider measured error; treat the estimate as a starting point. Recent sale check: this building sold for $320,000 in 2026; the estimate is about 70% apart. Treat the recorded trade as strong evidence alongside the model.

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: 2026-03-27 for $320,000 (recorded arm's-length sale).

Current ownership dates to 2026 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$250K$500K$750K$1M201120142017202020232026Last sold $320K · 2026$546K$525KCounty assessed valueMakeMe Estimate rangeRecorded sale

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 $133,600 (2011) to $524,500 (2026), up 293% over 15 years, per county tax rolls. The 2026 roll splits $524,500 into $416,800 land and $107,700 improvements.

Taxes