The median home price in San Diego County rose about 5.8 percent in June from the year before, to $476,000, as the number of homes sold increased 20 percent, to 4,467, according to data from CoreLogic.

The San Diego numbers mirrored what CoreLogic reported throughout Southern California, including information from Los Angeles, Orange, Riverside, San Bernardino and Ventura counties. In June, 24,378 homes were sold in the region, up 18 percent from June 2014. The median price was $442,000, up about 5.7 percent.

The median price in Southern California was the highest since October 2007, while the sales have not been higher since the summer of 2006, the end of the most recent housing boom.

"Although the total number of homes sold in June was still nearly 10 percent below the long-term June average, resales of existing homes were only about 4 percent below average," CoreLogic analyst Andrew LePage said. "It will be interesting to see if the market can hold the higher sales pace. So far this year the inventory of homes for sale has remained fairly tight, while prices have edged higher and many would-be buyers still struggle with affordability and credit challenges."