TEXAS STAR REAL ESTATE Our office is located at 3642-A Hwy.19 going N. Huntsville, Riverside, TX. 77320. Our hours are Monday - Friday 10 am till 6 pm. Also by appts on Weekends. Any time that is good for you we can meet you at the office. We have several agents that can assist you with all your needs. We are REALTORS® not just agents.