From January through December of 2017, there were 15 homes sold, with a median sale price of $630,000 - a 19.6% decrease over the $783,893 median sale price for the previous year. There were 17 homes sold in Black Diamond (unincorporated) in 2016.
The median sales tax in Black Diamond (unincorporated) for the most recent year with available data, 2016, was $6,230, approximately 1% of the median home sale price for 2017.
The following table compares Black Diamond (unincorporated) to other King County cities with similar median sales prices in 2017:
| City | Jan. - Dec. 2017 Home Sales | Jan. - Dec. 2016 Home Sales | % change (Total Home Sales) | Jan. - Dec. 2017 Median Sales Price | Jan. - Dec. 2016 Median Sales Price | % change (Median Sales Price) |
|---|---|---|---|---|---|---|
| Lake Forest Park | 125 | 182 | -31.3% | $680,000 | $540,000 | 25.9% |
| Snoqualmie | 164 | 239 | -31.4% | $675,000 | $575,000 | 17.4% |
| Woodinville | 103 | 143 | -28% | $654,750 | $610,000 | 7.3% |
| Kirkland (unincorporated) | 269 | 373 | -27.9% | $650,000 | $560,000 | 16.1% |
| Kenmore | 206 | 292 | -29.5% | $641,500 | $525,000 | 22.2% |
| Black Diamond (unincorporated) | 15 | 17 | -11.8% | $630,000 | $783,893 | -19.6% |
| Normandy Park | 73 | 98 | -25.5% | $630,000 | $597,000 | 5.5% |
| Bothell (unincorporated) | 110 | 174 | -36.8% | $622,500 | $526,500 | 18.2% |
| Vashon (unincorporated) | 136 | 202 | -32.7% | $577,500 | $516,000 | 11.9% |
| North Bend | 41 | 71 | -42.3% | $575,000 | $505,000 | 13.9% |
| Ravensdale (unincorporated) | 29 | 37 | -21.6% | $565,000 | $456,000 | 23.9% |
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