Square-foot index up 3% in June

Boston, Atlanta top list for monthly value gains

An index that measures changes in the price per square foot of homes for 25 metro areas posted a monthly increase of 3 percent in June, according to real estate data company Radar Logic, with gains in all but two metros.

The 3 percent rise from May to June was one of the largest gains for the month of June in the history of Radar Logic’s price data, which dates back to 2000.

The Boston metro area had the highest monthly gain in price per square foot in June, up 6.5 percent to $200.63, followed by the Atlanta metro area, up 5 percent to $81.19.