[Selanne_200]

Mortgage Broker chiming in here. What your broker meant when financing is approved is mostly a conditional approval, where it is still subject to various conditions such as docs review, employment verification and appraisal.
As others mentioned, unless your way over paid for the unit, the appraisal should come back fine. Worst case scenario, you'll have to come up with the difference as additional down payment. For example: Original approval amount was for 800,000 on a 1 million dollar unit(80% is max assuming you're not purchasing mortgage insurance). The appraisal comes back at 900,000. The max loan amount they'll lend you is now 80% of 900,000 which is 720,000, and the difference of 80,000 you will have to make up by making additional down payment.