Introducing Hidden Knoll. Unique to Southlake are these elevated lots with homes ranging from 3, 000 sq.ft. - 4, 400 sq.ft. Entire yard maintenance included in HOA. Tree Top views and Green Belt Lots. Subdivision pond, walking trails, perimeter stone wall, sunset views, high elevations, and featuring custom floor plans! Carroll ISD. This is permanent Carroll ISD distract boundary map.