Small Business.
Big Results.

Management and Construction Solutions



Callahan Enterprises provides day-to-day expertise across multiple disciplines. We offer talent and vast experience spanning multiple Management and Constructions areas that employ industry and government best practices to deliver cost-effective and high-quality products. Callahan provides cradle to grave services when and where you need it so you can enjoy peace of mind.




Callahan Enterprises believes that a successfully executed plan is vital to ensuring the success of any project. Our management services provide day-to-day oversight expertise needed to keep your project on track. By incorporating industry and government best practices into your business processes and management strategies, Callahan can help you stay ahead of the competition.


Our Technology workforce contains highly technical employees with advanced degrees in engineering, technology, and the sciences. Let Callahan sustain or update your system, install telecommunication services, or run wiring. Callahan can provide various computer, communications and engineering services that accomplish what you need at a reasonable price. No requirement is too small.


Callahan Enterprises provides a single source for total construction management services. Whether the project calls for a construction manager or an experienced in-house tradesman, Callahan Enterprises has the people, facilities, and expertise to meet your needs. We provide framing, erection, and all types of interior finishes, ensuring that our fit and finish is second to none. Look to us for Construction Management, Design-Build, Architectural, and Pre-Construction services.

Headquartered in Maryland and serving the Greater Washington DC, Maryland, & Northern Virginia Metro Region

Who We Serve

Federal Government

Callahan Enterprises has supported and continues to support various elements of the federal government. From the Department of Defense to the National Science Foundation and the Marine Corps, Callahan provides seasoned professionals to support the government in its mission to defend the United States and its allies.

State Government

Licensed by the Maryland Home Improvement Commission, certified by the Maryland Department of Transportation and the Commonwealth of Virginia, Callahan supports Maryland and Virginia by providing exemplary services. No job is too small. Contact us to discuss how Callahan can support you.

Small & Large Business Entities

Regardless the size, Callahan Enterprises can help. Whether your company employs ten people or hundreds of people, Callahan believes in teamwork.  From conference room redesigns to full building construction or administrative support to management services Callahan handles as much or as little as you need. Contact us to discuss how Callahan can support you.

Who We Are

Callahan Enterprises seizes the difficult questions and complex problems to provide simple solutions that address the needs of our clients. Our goal is to provide you the very best services at the very best price. We work closely with our clients to understand their needs and deliver a high-quality finished product. Callahan Enterprises offers a wide range of services and holds numerous certifications from database administration, to security audits and testing, to application design, integration, and high-speed wireless networks. We hold a strong partnerships with federal, state and local government agencies to privately held companies. Callahan Enterprises has the solutions for tomorrow’s mission critical applications and is ready to help you succeed.

We would make a great team.
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We are a small company that serves without limits.

We have been privileged to serve local, state and federal government agencies, military bases, building management agencies, higher education institutions and more.

Client satisfaction is the only measurement of our success.

Our clients’ satisfaction matters so we provide our services with a total commitment to integrity and ethical performance. Your success is our success.

Our relationship doesn’t end with the task.

We are a family owned business that never stops growing. We work to not only establish strong partner relationships, but to maintain those relationships even after the primary task is completed.