STA is one of the most trusted engineering companies in the Australian building industry. For almost 30 years, our reputation has been built on delivering smart, practical engineering for the residential and commercial sectors. We streamline your build with practical, innovative, and client-focused solutions across soil testing, foundation design, structural engineering, building hydraulics, and compliance inspections. Founded in 1991, we’ve grown to become the largest specialist residential engineering company in Queensland, operating from Bundaberg in Central QLD, down to Bermagui in Southern NSW.