A Catholic hospital chain that bought a 270,000-square-foot office building in Douglas County last week wanted the land beneath it. CommonSpirit Health said Friday morning that it will demolish the former TTEC headquarters building at 9197 S. Peoria St. and incorporate the land it sits on into a 42-acre medical campus. The Chicago-based health care company paid $45.5 million for the building just south of E-470, east of Interstate 25.