In February 2018, there were four homes sold, with a median sale price of $537,500 - a 45.3% increase over the $370,000 median sale price for the same period of the previous year. There were four homes sold in Black Diamond in February 2017, as well.
The median sales tax in Black Diamond for the most recent year with available data, 2016, was $3,492, approximately 0.6% of the median home sale price for February 2018.
The following table compares Black Diamond to other King County cities with similar median sales prices in February 2018:
| City | Feb. 2018 Home Sales | Feb. 2017 Home Sales | % change (Total Home Sales) | Feb. 2018 Median Sales Price | Feb. 2017 Median Sales Price | % change (Median Sales Price) |
|---|---|---|---|---|---|---|
| North Bend | 1 | 3 | -66.7% | $625,000 | $220,000 | 184.1% |
| Shoreline | 22 | 31 | -29% | $620,000 | $505,000 | 22.8% |
| Carnation | 1 | 0 | - | $615,000 | $0 | - |
| Snoqualmie (unincorporated) | 1 | 1 | 0% | $605,000 | $379,900 | 59.3% |
| Issaquah (unincorporated) | 3 | 7 | -57.1% | $595,000 | $600,000 | -0.8% |
| Black Diamond | 4 | 4 | 0% | $537,500 | $370,000 | 45.3% |
| Vashon (unincorporated) | 6 | 8 | -25% | $505,000 | $478,500 | 5.5% |
| East Renton Highlands (unincorporated) | 37 | 43 | -14% | $491,000 | $460,500 | 6.6% |
| Seattle (unincorporated) | 14 | 28 | -50% | $475,000 | $342,000 | 38.9% |
| Maple Valley | 14 | 47 | -70.2% | $452,000 | $391,000 | 15.6% |
| Renton | 17 | 32 | -46.9% | $429,950 | $404,000 | 6.4% |
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