Building San Antonio, one project at a time. OSO is your trusted partner for commercial and residential general contracting services. We specialize in concrete, ensuring a durable and long-lasting foundation for your project. Our asphalt paving services create smooth and safe surfaces for your customers or employees. We also handle demolition efficiently and safely, clearing the way for your new construction. Beyond these core services, we also excel in metal building construction and new construction projects of all sizes. With over 20 years of experience serving the San Antonio community, we are licensed and insured for your protection. Our commitment to on-time and on-budget project completion has earned us a reputation for excellence. Contact us today at 830-253-5737 for a free quote and let's discuss how we can bring your vision to life!