I think one of the major factors that have influenced the building inspection industry, at least here, is liability. People aren't willing to take responsibility for their decisions and end up suing us. Even when we win, it costs a fortune, so we have to idiot proof everything.
We recently had a situation where a builder was constructing a single family residence. The lot was in-filled, so they had to get an engineer for the soils and build an engineered pad for the building. All of this went fine and they placed the foundation on the pad. Then, they decided to connect to the sewer lateral serving that lot. Well golly-gee, the foundation is too low and that bathroom in the basement won't work. Now they should have taken an elevation shot off the lateral to dictate where the foundation needed to be, but they didn't. Instead I get a phone call that they will be suing us because we accepted the foundation.
No problem with the foundation!!!