CORNERSTONE ENGINEERING INC

Cornerstone Engineering Inc. specializes in civil construction, mechanical systems, and facility upgrades for federal and defense infrastructure. Their core capabilities include the installation and renovation of plumbing, heating, air-conditioning, and ventilation systems; finish carpentry for building envelope improvements such as window replacement; and heavy civil construction tasks including channel widening, flood recovery, and civil works projects. They deliver end-to-end construction services, managing labor, equipment, materials, quality control, and site supervision to meet stringent military and federal standards. Their technical expertise lies in integrating mechanical systems with existing infrastructure, executing precision carpentry in operational facilities, and implementing erosion control and waterway modifications under tight operational constraints. The contractor has established a consistent presence with the Department of Defense, delivering mission-critical construction and repair work at military installations, including repair stations and base infrastructure. Their work supports facility resilience, environmental compliance, and operational continuity, indicating a trusted partnership with DoD facilities management and civil engineering teams. Their industry focus centers on NAICS 238220 (plumbing, heating, and air-conditioning contractors) and 237990 (other heavy and civil engineering construction), with supplementary experience in finish carpentry. This positions them as a niche provider for integrated facility modernization, particularly in defense environments requiring coordinated mechanical and civil works. They are not a general contractor but a specialized builder focused on technical execution within constrained operational settings. Cornerstone Engineering Inc. is a small, locally based firm headquartered in Jeffersontown, Kentucky, operating as a 2L entity with no federal certifications on record. Their market positioning is regional yet mission-critical, serving DoD installations across the Midwest with responsive, hands-on construction execution tailored to military facility requirements.