The price of a purchasing a home continues to get more expensive in Columbia. The Columbia Board of Realtors reported their monthly statistics on Monday. The median average sale price of a home in Columbia in June was up 2% from a year ago to $337,000. There were 213 properties sold. That’s down nine percent from last June. New construction is booming. Building permits were up 58% in Columbia and 60% in Ashland from a year ago.