Building With Experience and Integrity. O’Haver Contractors was established in 1996 by its founder and President, Donald R. O’Haver II. Located in San Antonio we pursue commercial building projects throughout Texas in both private and public sectors providing general contracting services, as well as construction management, design-build, construction cost estimating and consulting. Our staff has related experience in a broad range of building types from warehouses to industrial parks to retail centers to education facilities and much more. The staff is experienced in projects from $10,000 to over $100,000,000. The staff’s approach to building is to provide a service, which must be delivered professionally and expeditiously, with an eye on repeat business at all times.