A house is an expensive purchase and money can be tight once you move in. You could regret your decision to buy a house if faced with unexpected repair bills that weren't in your budget. A building inspection will give you information regarding existing and potential building problems. Identifying building issues before committing to the purchase means that you can choose to proceed with the purchase or pull out depending on what is discovered. A building inspection may identify issues that even the vendor is unaware of i.e. the hot water cylinder is starting to leak and will need replacing.