CHATTANOOGA, TENN. — The Maclellan Foundation has purchased the 40,000-square-foot Market Center office building from Chattanooga Land Co. for $7.16 million. Maclellan is a major tenant in the 4-story building. The Class A property, located in Chattanooga, was constructed in 2001. Burchay’s Building, which spans 2,500 square feet, and a 120-space parking lot were also included in the purchase. David F. DeVaney of Chattanooga-based NAI Charter brokered the transaction.