Is Black Diamond, WA 98010 a buyer’s or seller’s market?

The Black Diamond housing market right now

In the three months ending August 31, 2026, 22% of homes in Black Diamond, WA 98010 sold above their list price, the typical home went under contract in 31 days and there were 3.5 months of supply. Under four months of supply means sellers have the edge: expect competition for well-priced homes. That’s based on 70 home sales.

Compared with the same period a year earlier, the share selling over asking fell from 37%, homes sold faster (48 days then) and the median sale price fell 10% to $725,736. Overall, Black Diamond is less competitive than a year ago, which gives buyers more room.

Within King County, homes here sell more slowly than in 87% of the county’s ZIP codes, and sell more often over asking than in 62%. On our competition score, Black Diamond ranks #142 of 298 WA ZIP codes with enough sales (score 59 out of 100).

Nearby, buyers who want less competition could look at Skykomish 98288 (0% sold over asking) or Baring 98224 (0% sold over asking), while Seattle 98155 (43% sold over asking) and Seattle 98136 (41% sold over asking) are even more competitive.