DAE SUNG LLC

DAE SUNG LLC specializes in the maintenance, repair, and modernization of critical infrastructure systems within federal facilities, with a primary focus on facilities support services. The contractor delivers hands-on technical solutions for HVAC components, including condenser units, compressors, oil heaters, and hydraulic cylinders; performs electrical upgrades such as branch breaker replacements; repairs parking lot surfaces and storm drainage systems; and installs or replaces sensors, dock levelers, and automatic door mechanisms. Their work spans building systems integration, mechanical system rehabilitation, and preventive maintenance for federal buildings, demonstrating deep expertise in facility operations and life-cycle asset management. DAE SUNG LLC differentiates itself through rapid response to mission-critical repairs, precision execution on time-sensitive federal site work, and consistent delivery across diverse geographic locations without reliance on subcontractors. The company maintains a longstanding, high-volume relationship with the General Services Administration, providing routine and emergency facilities maintenance across courthouses, federal office buildings, and service centers nationwide. Their work for GSA includes repairs to building automation systems, plumbing, electrical, and environmental controls, indicating a trusted role in sustaining operational continuity for federal infrastructure. A single contract with the Department of State suggests potential for expansion into diplomatic or overseas facility support, though GSA remains their dominant client. DAE SUNG LLC operates exclusively under NAICS 561210, which encompasses facilities support services such as custodial, maintenance, and repair functions for government-owned properties. This positions them as a niche provider of hard services—physical infrastructure upkeep—rather than administrative or IT-based support. Their market focus is squarely on federal building operations, serving the GSA’s mandate to maintain safe, functional, and energy-efficient public facilities. The company is structured as an 8H entity, indicating it is a small business owned and controlled by a veteran, though no additional certifications are listed. Based in Plainfield, Illinois, DAE SUNG LLC serves federal sites across multiple states, demonstrating a geographically agile presence with no regional limitations in contract execution.