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.