Founded in 1980, Robert Derector Associates (RDA) is a full service MEP engineering firm specializing in Commercial Tenant Interiors, Building Modernizations, Lease Assistance, Due Diligence Studies, and Infrastructure Upgrades. It is through our uncompromised attention to detail, constant concern for our clients' needs, and a pragmatic approach that has led RDA to be known as a premier consulting engineering firm in New York.