Since 1993, ATC has been providing a complete range of design services that include architecture; civil, structural, geotechnical, environmental, mechanical, electrical and plumbing engineering; surveying; planning and permitting services; construction testing and inspection; and construction administration services. So, whether you are looking for an A.L.T.A. Survey, building or site design and construction documentation, construction staking or a complete turnkey design package we've got it covered. We provide these services with our in-house staff so you can have all of your project design services managed by one firm. A "One Stop Shop" if you will. We believe that we are the only firm of its kind in California