Single Source Design-Build One entity, held responsible for project design, cost, schedule and performance. As a single source, Rosendin Electric can initiate design and commence construction activities in tandem, greatly increasing the success of any demanding schedule. Rosendin Electric offers proven experience in integrating construction, safety, estimating, engineering and equipment for design, cost savings, and scheduling input. Our preconstruction efforts also include true peer collaboration and the ability to augment production staff, as needed. By providing engineering with pricing and constructability under one roof, Rosendin Electric is able to save our customers time and money.