The number of sales and median prices for previously owned homes on Oahu rose in August, according to a Honolulu Board of Realtors report released today.

The biggest increase was for condo sale volume that jumped 20 percent to 575 last month compared with 481 a year earlier.

There hadn’t been as many sales for a single month since August 2006 when 580 condos were sold in the midst of the prior housing market boom on the island.

As for prices, condos sold for a median $419,000 last month, up 5 percent from $398,000 a year earlier. The record was $425,000 in July.

In Oahu’s single-family house market, the number of sales rose 5 percent to 362 in August from 344 in the same month last year, while the median price also increased by 5 percent to $786,250 from $747,500 in the same period. The record was $795,000 in June.