AUSTIN—Developer Riverside Resources has begun construction on the first phase of a 100-acre mixed-use campus on Parmer Lane in Cedar Park.

The first phase of the campus, called Presidio, will ultimately feature 74,000 square feet of office space, a 100-room hotel, 320 urban lofts and 21,000 square feet of retail/restaurant space. That initial phase spans 26 acres off the southeast corner of Parmer Lane and Ranch Trails Court.

The remaining 74 acres, on the other side of Ranch Trails Court, spans north and west along Parmer Lane backing up to Brushy Creek. That overall size of the mixed-use development, firm reps say, means Presidio will be able to accommodate a major office campus with upwards of 500,000 square feet, along with additional lofts, retail and restaurant space.