Timmons Group is an engineering & technology firm specializing in civil, environmental, GIS, and surveying services to clients across the US.Recognized for over 30 years as one of Engineering News Record’s (ENR) Top 500 Design Firms in the country, Timmons Group provides civil engineering, structural engineering, environmental, GIS/geospatial technology, landscape architecture, and surveying services to a diverse client base. Headquartered in Richmond, Virginia, Timmons Group has regional offices throughout the United States.