In November 2021, there were five homes sold, with a median sale price of $725,000 - a 22.3% increase over the $593,000 median sale price for the same period of the previous year. There were two homes sold in Black Diamond in November 2020.
The median sales tax in Black Diamond for the most recent year with available data, 2016, was $3,492, approximately 0.5% of the median home sale price for November 2021.
The following table compares Black Diamond to other King County cities with similar median sale prices in November 2021:
| City | Nov. 2021 Home Sales | Nov. 2020 Home Sales | % change (Total Home Sales) | Nov. 2021 Median Sales Price | Nov. 2020 Median Sales Price | % change (Median Sales Price) |
|---|---|---|---|---|---|---|
| Carnation | 2 | 1 | 100% | $787,475 | $607,000 | 29.7% |
| Shoreline | 44 | 20 | 120% | $765,000 | $665,000 | 15% |
| Renton (unincorporated) | 10 | 3 | 233.3% | $752,000 | $419,995 | 79% |
| Lake Forest Park | 11 | 8 | 37.5% | $750,000 | $792,500 | -5.4% |
| Maple Valley | 36 | 16 | 125% | $729,500 | $510,000 | 43% |
| Black Diamond | 5 | 2 | 150% | $725,000 | $593,000 | 22.3% |
| East Renton Highlands (unincorporated) | 43 | 25 | 72% | $715,000 | $600,000 | 19.2% |
| Renton | 32 | 28 | 14.3% | $672,500 | $610,000 | 10.2% |
| Ravensdale (unincorporated) | 4 | 4 | 0% | $644,500 | $520,000 | 23.9% |
| Enumclaw (unincorporated) | 11 | 5 | 120% | $631,000 | $685,000 | -7.9% |
| White Center (unincorporated) | 15 | 5 | 200% | $602,500 | $425,000 | 41.8% |
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