Some Highlights: The “Cost of Waiting to Buy” is defined as the additional funds it would take to buy a home if prices and interest rates were to increase over a period of time.Freddie Mac predicts that interest rates will increase to 4.8% by this time next year, while home prices are predicted to appreciate by 4.8% according to CoreLogic.Waiting until next year to buy could cost you thousands of dollars a year for the life of your mortgage!