GBA is a complete-service professional design company. Our experienced, multidisciplined team supplies our customers with a huge array of engineering and architectural services. Since our founding in 1969, the company has expanded from 10 employees to more than 230 employees in five locations.


Contact Details

  City Saint Louis , MO
  Zip Code 63101
  Address 705 Olive St # 500
  Phone Number (314) 231-0100