Planning Today.
Building Tomorrow.
Engineering Solutions.

RAK Civil Engineers Inc., formerly known as Robert A. Karn & Associates, is a locally based, family-owned civil engineering firm proudly serving communities throughout Northern California. Now led by the Petrini family—whose engineering legacy spans multiple generations—the firm continues a long-standing tradition of delivering dependable, high-quality engineering solutions with a strong understanding of local regulations, agencies, and project needs. Our deep local connections and trusted relationships with agencies, consultants, and contractors help projects move efficiently from planning through construction.

With over 30 years of experience in Northern California, RAK Civil Engineers provides comprehensive services in civil engineering design, land development, and consulting, including coordination with licensed land surveyors. The firm has successfully delivered projects across a diverse range of sectors, including commercial, industrial, public works, multifamily and residential developments, subdivisions, and individual homeowner improvements.

At RAK Civil Engineers, successful projects start with thoughtful planning, clear communication, and strong client relationships. We combine practical experience, innovative design, and modern technology with a commitment to integrity and responsive service—delivering efficient, reliable engineering solutions built to last.

From initial feasibility and planning through design, permitting, construction documentation, and construction administration services, our team remains actively involved at every stage of the project. We apply sound engineering judgment and practical solutions to help clients navigate complex regulatory requirements, make informed decisions, and keep projects moving forward.

Our commitment goes beyond technical delivery. We prioritize accountability, responsiveness, and long-term partnerships—ensuring every project is completed with care, efficiency, and lasting value for the clients and communities we serve.