HDR Inc. South Natomas (HDR|DTA) Share: Engineering HDR Inc. South Natomas (HDR|DTA) Visit Website 2379 Gateway Oaks Drive STE 200 Sacramento, CA 95833 (916) 679-8700 LinkedIn Facebook Twitter YouTube Instagram About Map About About HDRHDR is an employee-owned architectural, engineering and consulting firm that helps clients manage complex projects and make sound decisions.As an integrated firm, HDR provid What's Nearby? Distance: 5 10 15 20 25 50 mi.