2018 HIA South Australian Professional Major Builder The Rivergum Group is a progressive building company servicing wide rang ... ing property markets in South Australia and VIC. An industry leader in the design, construction and delivery of innovative multi-dwelling solutions, from small scale to new community developments. The Rivergum Group keeps abreast of emerging trends, new methods of construction and innovative building materials. The company dedicates ongoing resources to exploring innovations that offer the potential to improve construction quality and build times, always with the intention of meeting (or exceeding) ever increasing sustainability requirements. read more