Clarion Construction has been a trusted design-build cold storage general contractor in Southern California since 1988. We are specialists in temperature-controlled environments, including cold rooms, processing/production rooms, and biomedical/pharma clean rooms. We self-perform IMP installs, underfloor heat, and floor insulation work and take pride in our customer service, quality, and affordability. From large jobs to minor repairs, we look forward to serving you. As experts in cold storage construction, we bring cutting-edge technology and innovative solutions to maximize operational efficiency and meet regulatory requirements. We serve the city of Walnut and all of Southern California.