A Tennessee-based homebuilding group has purchased Chafin Communities, located in Buford, in a deal that includes about 1,100 developed, undeveloped and contracted building lots. A subsidiary of Warren Buffett’s Berkshire Hathaway Inc., Clayton homebuilding group will keep Chafin Communities founders and brothers Eric and Daryl Chafin in leadership roles, as well as the 24 people already employed there during the transition. “This is a monumental achievement and a win-win for both groups,” Eric Chafin said.