Owning your own home

In Australia it works something like:

Make an offer, pending legals.
Offer accepted = legally binding contract for both parties (none of this English gazump/gazunder shit)
Buyer has to pay a deposit and seller then has to open up place for building surveys and shit.
If surveys all go well, buyer is legally obliged to complete and seller is legally obliged to complete

Something like that anyway.

That's a big IF. What happens when stuff crops up in the survey that needs to be resolved before completion?