Hey guys,
My girlfriend is looking to buy a house in West Auckland. In the plans at the council it is a single bedroom "cottage" with a kitchen, bathroom, dining/living area. But in fact 1 bedroom has been split into 2, an extra living room and bedroom have been added (built over a deck which isn't on the original plan), there is also a rumpus room and study downstairs and garage. So its been majorly extended and no sign of any building consents. The rumpus/study and garage were added likely pre-1992 (so they don't need a building consent?) but no idea about the extra living area and bedroom over the deck.

Apparently it was owned by a builder who we guess must have done it himself. She got a verbal building report basically stating nothing major issues. But worried about potential resale and insurability. Anyone bought somewhere without building consents? Can these be granted retrospectively?