When a consumer gets a loan from a bank for a new dwelling and the loan is based on the banks ability to issue credit as a function of some multiple of actual cash on hand, all the players involved in the development to the new property (carpenters, plumbers, lumber yards, etc.) get paid in real dollars credited to their own bank accounts. These dollars do not come from the savings of depositors that will eventually be repaid with interest, they are dollars that come from the creation of new debt. In other words they did not exist before the creation of the new loan. Sure, the bank has a tidy balance sheet showing assets and liabilities that all fit together neatly but as the originator of the new loan money they are in a position to generate profits from interest payments on money that they created...out of thin air. Meanwhile all the dollars paid out for the construction of the house inflate the money supply pushing prices higher.
Just as an aside, with all the billions out there that suddenly find their way onto bank balance sheets as losses these days I'd say the balance sheet is a little suspect as a good indicator.