Southland Industries (SI) is among the largest, safest, and most progressive mechanical-systems engineering, construction, and service companies in North America. We maintain premier in-house engineering and design, and the ability to expertly and productively self-perform our work in HVAC, plumbing, process piping, fire protection and architectural systems. Since 1949, our people have been designing and building innovative solutions while warranting them to be free of “gaps in scope” and coordinated with other disciplines. SI excels in a wide variety of market sector projects ranging from high rise offices, luxury hotels, and public facilities to the most demanding advanced technology projects for the semiconductor, telecom, biotech and biopharm industries.