I can see two problems with the D&BPAct. The first is that someone decided that building consultants were part of the problem and should be eliminated. So no provision was made for the registration of building consultants even though some of them had been helping strata plans for decades. The work they did had to be placed with engineers or architects who had no knowledge of particular buildings that might have been using the same consultant for ten years.
Another problem with the Act is that it assumes that unqualified residents are incapable of making long-term decisions correctly. False – many buildings have long-term owners who well understand the issues with the building and trust the tradesmen they have used many times before. Tradies who take short cuts needn’t expect return business nor personal recommendations.