Connect with Top-Rated Engineers in Columbia!

Holt Consulting Company, LLC is a multi-discipline engineering firm that provides planning, design, and management services for transportation infrastructure. The company was established by two long-time friends and co-workers, Paul Holt and Ken Holt. With a relationship-based culture and responsive communication, Holt Consulting Company, LLC is the consultant of choice for state and local governments. The firm's expertise includes aviation, surface transportation, and project management services.

HPG and Company, Consulting Engineers, Inc. offers engineering and related planning and administrative services to public and private sector clients throughout South Carolina. We provide a complete range of engineering services, including water systems, wastewater systems, storm water systems, roadway design, and more. Our experienced team provides creative solutions combined with unequaled personal service and attention to our client's needs. With over 60 years of collective experience, we strive to provide the best possible services for our clients.

Carlisle Associates Inc. is a full-service engineering firm providing comprehensive services in architecture, civil engineering, electrical engineering, mechanical engineering, and structural engineering. We take a full-service approach to design, with a team of experts in-house to deliver solutions in one complete and coordinated package. Our services include architectural design, civil engineering design, civil engineering coordination, site planning, structural engineering, mechanical engineering, electrical engineering, and construction contract administration. We have almost 50 years of experience designing facilities with specialized requirements and have long-term partnerships with our clients.