From July through December of 2017, there were six homes sold, with a median sale price of $679,975 - a 16.8% decrease over the $817,500 median sale price for the same period of the previous year. There were 11 homes sold in Black Diamond (unincorporated) in the second half of 2016.
The median sales tax in Black Diamond (unincorporated) for the most recent year with available data, 2016, was $6,230, approximately 0.9% of the median home sale price for the second half of 2017.
The following table compares Black Diamond (unincorporated) to other King County cities with similar median sales prices in the second half of 2017:
| City | July - Dec. 2017 Home Sales | July - Dec. 2016 Home Sales | % change (Total Home Sales) | July - Dec. 2017 Median Sales Price | July - Dec. 2016 Median Sales Price | % change (Median Sales Price) |
|---|---|---|---|---|---|---|
| Woodinville (unincorporated) | 63 | 135 | -53.3% | $725,000 | $660,000 | 9.8% |
| Seattle | 1,587 | 3,610 | -56% | $722,000 | $620,000 | 16.5% |
| Snoqualmie (unincorporated) | 5 | 11 | -54.5% | $699,950 | $602,000 | 16.3% |
| Lake Forest Park | 52 | 97 | -46.4% | $692,500 | $570,000 | 21.5% |
| Normandy Park | 24 | 42 | -42.9% | $681,500 | $619,500 | 10% |
| Black Diamond (unincorporated) | 6 | 11 | -45.5% | $679,975 | $817,500 | -16.8% |
| Kirkland (unincorporated) | 92 | 201 | -54.2% | $670,500 | $560,000 | 19.7% |
| Woodinville | 29 | 78 | -62.8% | $657,450 | $645,500 | 1.9% |
| Kenmore | 72 | 158 | -54.4% | $657,250 | $526,673.50 | 24.8% |
| Vashon (unincorporated) | 52 | 111 | -53.2% | $636,000 | $540,000 | 17.8% |
| North Bend | 12 | 35 | -65.7% | $616,875 | $519,000 | 18.9% |
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