A building spanning an area about the size of two and a half football fields is being planned by the firm which announced plans this past week to establish a modular home manufacturing site here. Sean Overeynder, director of Lamesa Economic Development, said Friday that McKinney-based TatumTek LLC is planning a 150,000-square-foot facility at the western edge of Lamesa. “That is a huge building,” Overeynder said. “That’s the equivalent of about three and a half acres – that’s how big that building will be.” While that building is part of the company’s initial plans, Overeynder said, TatumTek’s plans also call for construction of another ...