Capitol Development Design, Inc., Logo
(301) 937-3501

Innovative Operations

Dulles Airport

Redesign your neighborhood with civil engineering work from our team. Whether you need to improve a road on a prominent highway or construct a bridge in your local city, our full-service team has the expertise and resources needed to safely and properly do the job. Learn more about how we can help you rebuild. 

Civil Engineering

Replicate your outlines, maps, signs, and other materials using digital printing services from our team. With reprographics, public and private entities can copy, print, or scan documents and images. You can also have our team manage your information. Explore the options you have with us and learn how we also protect you.


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Call (301) 937-3501

About Capitol Development Design, Inc.

Improve your community infrastructures with civil engineering and project management services from Capitol Development Design, Inc. (CDDI). With our team, you get complete and value-adding services that take the quality of your entities to the next level. We provide everything from state-of-the-art landscape design to efficient storm water management. Not only do you get superior project planning, designing, and overseeing when you choose us, but you also get top-level engineers who work closely with you to bring your visions to life. Revitalize, redesign, and rebuild your communities with effective engineering solutions from our team. 

Capitol Development Design, Inc. is headquartered in Beltsville, Maryland, and was founded in 1994 by President/CEO Victor Chen, P.E. He was later joined by three partners, namely Gary R. Butson, A.L.S.A., Marwan F. Mustafa, P.E. L.S., and Massoud Towhidi, M.S.C.E, P.E. Our business is a certified Minority Business Enterprise (MBE) with the Federal Small Business Administration and the Maryland Department of Transportation. We also hold memberships with:

The Metropolitan Washington Airports Authority | The District of Columbia Department of Transportation | The Prince George's County Government | Prince George's County Public Schools | Howard County | Virginia Department of Transportation 

Mission Statement

Our mission at CDDI is to provide the highest quality and most cost-effective civil engineering, surveying, land planning, and testing services to our clients, while assuring promptness and efficiency on all projects.

Testimonial Icon

"We were referred to CDDI by a friend and were extremely pleased with their Professionalism and customer service received. We definitely plan to use CDDI in the near future!"


Thank you for your interest. Please reach out with questions or comments using the information below. We look forward to hearing from you.

(301) 937-3501

Hours of Operation
Monday–Friday: 8:00 a.m.–5:00 p.m.

4600 Powder Mill Road, Suite 200
Beltsville, MD 20705

Serving Beltsville, Maryland 

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