It’s like accepting the vendor’s marine survey on a vessel.
Worse with the certification nonsense in NSW and probably other states, is
complying development. Coupled with a private certifier you can literally have zero forewarning of a large (“complying”) development next door or anywhere really. I’ve had it happen three times in twelve months. First you know is when they start removing asbestos or stripping the roof. Yet a proposal to open a laundromat 500m away is put through insane hoops.