See What We've Been
Building

Each building is part of

Our Body of Work

Costello Construction has built a variety of commercial construction projects in the mid-Atlantic area, including Maryland, Washington DC and Virginia. We specialize in Higher Education, Fitness and Recreation, Libraries, Office Buildings and Parking Garages and serve both the public and private sectors. We provide a wide range of services including preconstruction analysis, design-build and sustainable construction. We see each project as a larger body of work, which we call the Costello Experience.

View our portfolio

Don't just view our work

Help Us Make it

We are always inspired by our projects. If you are too, we should talk. Want to join a team that puts quality first? Want to learn more about our corporate culture? Do you see yourself as more than an employee— do you see yourself as a craftsman? Then you should join the Costello team.

Careers At Costello
Ready to Build the Next Amazing Space?
Let’s Start Something
Tell us about your project
Close
Close
Let's Start a Conversation

We’re always looking for new opportunities. If you’re interested in partnering with us, please drop us a line.