D SQUARE LLC & AU AUTHUM KI A JOINT VENTURE

D SQUARE LLC & AU AUTHUM KI A JOINT VENTURE specializes in commercial and institutional building construction with deep expertise in mission-critical infrastructure maintenance and renovation for federal facilities. Their core capabilities include structural repairs, roofing and waterproofing systems, HVAC and chiller replacements, electrical system upgrades—including LED lighting retrofits—and specialized abatement and demolition of aging building components. The team delivers precision work on high-security sites, including U.S. Coast Guard air stations, training centers, and housing complexes, with demonstrated proficiency in retrofitting perimeter fencing, repairing concrete aprons, and servicing oil-waste separator systems to meet environmental and operational compliance standards. Their technical approach integrates durable materials, energy-efficient upgrades, and strict adherence to federal construction codes, ensuring minimal disruption to ongoing operations. The joint venture maintains a consistent partnership with the Department of Homeland Security, delivering facility modernization across Coast Guard installations from Alaska to California, including aviation support structures, fire stations, and maritime moorings. They also support the Department of Defense with specialized construction tasks such as antenna pad installations and perimeter security enhancements, reflecting a strong understanding of DoD facility standards and security protocols. Operating under NAICS 236220, the contractor focuses exclusively on institutional and commercial construction, with a vertical specialization in federal maritime and aviation infrastructure. Their work is defined by precision, regulatory compliance, and mission continuity, positioning them as a trusted partner for aging federal facility portfolios requiring sensitive, high-reliability upgrades. As a Service-Disabled Veteran-Owned Business, the joint venture brings disciplined project execution and a commitment to federal contracting integrity. Based in Tucson, Arizona, they maintain a national footprint serving coastal and inland federal installations, leveraging their certification to deliver responsive, mission-aligned construction services across the federal landscape.