Since 1973 Design Construction has been providing full service custom metal fabrication, and repair to manufacturing, construction, and agricultural industries. We carry numerous metals that differ in size, shape, and type providing customers with a wide range to choose from. We are one of the oldest family run steel providers and custom metal fabrication shops around the east bay area.    Design Construction also provides service to its customers to pre-cut, shear, and bend stock to the customers specifications. About Us Design Construction is a small family owned and operated business, That has served the metal and fabrication needs to the Bay Area for more than 40 years now. Providing steel sales and custom metal fabrication to the public. Acquiring a well known name to the industry, around Martinez and surrounding cities. Taking on jobs from over the Bay Area since 1973 Location Interested in seeing what we have in person Then stop by our fabrication shop today. We’re located directly across form the Shell Oil Refinery and right next to S&S Distributors.