While mortgage interest rates remain at historic lows, an increase of even one percentage point is not going to have a dramatic effect on affordability and any negative homebuyer response to rising rates is likely to be short-lived, according to a new Redfin survey. Even if mortgage rates climb to 5 percent, homebuyers would lower their expectations and shop for less expensive homes, said 49 percent of the 827 Redfin real estate agents who responded to the survey. Redfin conducted ...