but at the end of the day ( with or without third party inspection) i think most of the houses built in Melbourne are quite good ( look at those millions dollars houses in Toorak built in 1960's, Kevin was not even borned to inspect them !! ) esp when building with a reputable builder, it is not at their best interest to build doggy house, so spend the money in the way you like , you won't regret as long as u feel comfortable.
My partner said the same thing. Even on houses that cost 800k + to build will have something to be fixed.