Welcome to RAC Design Build, Led by Principals Rick and Tracy Cortez in the Elysian Valley of Los Angeles, RAC is a team of architects, contractors and fabricators that create beautiful valuable, and lasting spaces. Our fabrication team, Studio Cortez, designs and fabricates bespoke doors, windows, fixtures, furniture and objects that are beautiful and useful. Together, our team transforms spaces of all sizes, from custom windows, to large creative campuses.