Our History

The Beginning

In 2002 Callahan Enterprises was started by Greg and Janet Callahan as Callahan Construction Company, Inc. providing general contractor services for residential and commercial construction. In 2011, Callahan received their SBA 8a certification as a Native American Small-Disadvantaged Company. Callahan won its first government contract with the General Services Administration (GSA) renovating the Department of Health and Human Services office buildings. In 2012, Callahan began work for the Centers for Medicare and Medicaid installing audio visual equipment and updating conference spaces. In 2014, Callahan began to expand into the DOD market by acquiring their first garage door maintenance contract onsite Joint Base Andrews. Callahan Construction Inc evolved into DBA Callahan Enterprises and obtained our TS Facility Clearance. By 2018 and 2019, Callahan Enterprises had won two subcontracting opportunities providing contract admin support for the USMC in Quantico, VA. 

Continued Growth

CE quickly expanded its presence in the Federal market by acquiring 45 additional contracts. Today, Callahan continues to pursue DOD focused contracts in both staffing and garage door maintenance while supporting the Department of Defense (DOD), Department of Energy (DOE), the National Science Foundation (NSF), and Maryland state and local governments. CE has built and continues to build strong relationships with partners who utilize our capabilities and share our common values of teamwork, quality, and integrity.