A mixed-use community may soon rise near the master-planned Lake Nona community in southeast Orlando. Arlington, Texas-based homebuilder D.R. Horton Inc. (NYSE: DHI) seeks Orange County approvals for 660 apartment units, 166 townhomes, 160 senior housing units, 150,000 square feet of retail space and 150,000 square feet of office space at 14314 Boggy Creek Road, according to Orange County records. …