From January through December of 2019, there were seven homes sold, with a median sale price of $544,000 - a 8.6% decrease over the $595,000 median sale price for the previous year. There were 11 homes sold in Black Diamond (unincorporated) in 2018.
The median sales tax in Black Diamond (unincorporated) for the most recent year with available data, 2016, was $6,230, approximately 1.1% of the median home sale price for 2019.
The following table compares Black Diamond (unincorporated) to other King County cities with similar median sales prices in 2019:
| City | Jan. - Dec. 2019 Home Sales | Jan. - Dec. 2018 Home Sales | % change (Total Home Sales) | Jan. - Dec. 2019 Median Sales Price | Jan. - Dec. 2018 Median Sales Price | % change (Median Sales Price) |
|---|---|---|---|---|---|---|
| Shoreline | 372 | 319 | 16.6% | $597,475 | $624,000 | -4.3% |
| Ravensdale (unincorporated) | 27 | 19 | 42.1% | $596,000 | $569,000 | 4.7% |
| Newcastle (unincorporated) | 16 | 7 | 128.6% | $575,000 | $552,000 | 4.2% |
| Enumclaw (unincorporated) | 82 | 78 | 5.1% | $567,500 | $529,725 | 7.1% |
| Lea Hill (unincorporated) | 28 | 38 | -26.3% | $567,500 | $547,100 | 3.7% |
| Black Diamond (unincorporated) | 7 | 11 | -36.4% | $544,000 | $595,000 | -8.6% |
| North Bend (unincorporated) | 98 | 99 | -1% | $530,000 | $520,000 | 1.9% |
| East Renton Highlands (unincorporated) | 412 | 414 | -0.5% | $500,000 | $479,000 | 4.4% |
| Burien | 187 | 173 | 8.1% | $499,000 | $465,000 | 7.3% |
| Renton | 370 | 338 | 9.5% | $485,000 | $490,500 | -1.1% |
| Renton (unincorporated) | 79 | 58 | 36.2% | $474,000 | $493,750 | -4% |
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