What does it take to get compensated from a builder in WA?

People often get surprised when I tell them that they can't automatically recover compensation from a builder just because that builder has departed from the plans and specifications in the building contract. They get even more surprised when I tell them that departures from applicable Australian Standards and Building Codes are still not enough to get you an award of compensation. Even a failure by a builder to complete building works in a "proper and workmanlike manner" (as the now repealed Builders' Registration Act 1939 required) or in a "proper and proficient" manner (as the new Building Services (Complaint Resolution and Administration) Act 2011 now requires) or in a manner that is not "faulty or unsatisfactory" (as both Acts require) will not necessarily get you compensated.