DDG Virginia specializes in mechanical, electrical, plumbing and fire protection system design. Our staff has diverse project experience that includes commercial office buildings, tenant interiors, design/build, educational facilities, health care facilities, office condominiums, residential, restaurants, retail and warehouse projects. Our experience and certifications help DDG Virginia maintain industry leading expertise in energy conservation, lighting design and mission critical facilities. We are a fully licensed corporation with business and professional liability insurance. We currently have professional engineering registrations in Maryland, Virginia and Washington DC.