Towne Vistas, LLC and local general contractor S.B.A. Development, Inc. dba Royal Construction are the creators of Echelon at Centennial Hills. Towne Vistas LLC is a group of long standing Las Vegas community members committed to enhancing living in the Las Vegas Valley. For the past three decades, Royal Construction Company has been dedicated to the craft of building homes and commercial properties which are as timeless as they are beautiful.