Actually there is a 'bank police' that monitors your loan for 12 months after closing the transaction.
Welcome to the computer age.
FNMA, Freddie Mac and GNMA (and all other investors) monitor the names that are hooking up the utilities. They monitor the address on the checks that pay the mortgage of the account from which the auto payment is coming.
The Note that you are signing states that it is your intention to occupy this property from the time of the inception of the loan for a minimum of 12 months.
Should the lender discover that this is not the case, the loan will be 'called' due an payable within 30 days of the discovery.
It is best to listen to the professionals in these cases. "Lying" as stated below to a lender constitutes mortgage fraud and that could get you in trouble...
The mortgage meltdown of the past few years has opened the eyes of the lenders.