Welcome to Allegheny Design Services Allegheny Design Services is a consulting engineering firm specializing in Structural & MEP building design and analysis. Dedicated to serving West Virginia and the surrounding region, ADS recognizes the need for reliable and full service engineering service for our clients. ADS provides all phases necessary to successfully complete a building project including: schematic design, design development, construction documents and specifications, and construction administration. Our straightforward approach provides our clients with efficient and creative solutions to their project. We currently hold licenses in West Virginia, Pennsylvania, Ohio, Indiana, Maryland, Virginia, District of Columbia, South Carolina, North Carolina, Mississippi, Nebraska, Louisiana, California, Alabama,Tennessee, Kentucky, Georgia and Florida.