Sales of homes priced between $1 million and $3 million in Contra Costa County have seen a 21 percent increase so far n 2017. As with other Bay Area counties competition remains fierce as strong demand and low inventory reamin the norm.

In September, more that half of Contra Costa County homes sold for more than the asking price, led by Pleasant Hill where two-thirds of the homes sold have been over the asking price.

Overall, median home prices in Contra Costa County markets have increased by 9 percent in 2017 and analysts expect the trend to continue over the next few years.