- This 24-acre mixed-use development includes approximately 4 million gross square feet, 2,000 residential units, 250,000 sf of office, 400,000 sf of retail, 4,200 parking spaces, and new public spaces. Consisting of multiple buildings, city blocks, and construction phases, Regent Square is envisioned as Houston’s premier mixed-use development and its first truly pedestrian oriented walkable city district. The project is characterized by a vibrant mix of uses, world-class public spaces, exceptional architecture, social interaction, and sustainable development. Phase 1 is complete, Phase 2 is under construction, and Phase 3 is currently under design with an anticipated groundbreaking in 2022.