Our Companies

Our robust portfolio of companies enables us to serve clients as the most versatile and well-equipped builder in the market.

Clark Construction is a leading provider of general contracting, design-build, construction management, and specialty contracting services for building and infrastructure assets.

Guy F. Atkinson Construction is one of the nation’s most experienced heavy civil contractors. Founded in 1926, Atkinson’s portfolio includes projects across markets, including highways and bridges, mass transit, mining, and tunneling. 

Shirley Contracting Company provides comprehensive transportation, heavy civil, and site construction solutions for public and private entities in the Mid-Atlantic region. Since 1974, Shirley has improved the region’s infrastructure by designing and constructing countless miles of roads and hundreds of bridges. 

C3M Power Systems is a leading electrical contractor that constructs, rehabilitates, and maintains electrical and special systems for railways, airports, highways and utilities nationwide.

Clark Civil is a leading contractor specializing in all aspects of civil and heavy civil construction. With expertise ranging from self-performance to comprehensive design-build delivery, Clark Civil works with clients to deliver safe and innovative infrastructure that strengthens our communities.

Clark Concrete self-performs structural concrete work throughout the Mid-Atlantic region. The company offers a range of services, including the scheduling and budgeting of conceptual documents, formwork design and installation, and concrete pouring and finishing.

Clark Foundations delivers advanced engineering and construction solutions for the most sophisticated excavation support and deep foundations systems. With more than 50 years of experience providing preconstruction, estimating, and self-perform construction services for support of excavation and deep foundations work, Clark Foundations provides project certainty.

Serving as a trusted construction partner to both public and private sector clients, Clark Water specializes in the delivery of water and wastewater infrastructure projects. Clark Water provides a full range of custom planning, design, construction, and construction management services to meet the specialized needs of the community.

CFP is an award-winning general contractor that specializes in building all things multi-family residential. The company's 60 years of experience delivering projects across the Mid-Atlantic region features a range of product types, including office-to-residential conversions, affordable housing, and market-rate developments. 

Clark Technologies is a leading builder of data centers and mission-critical facilities.