The 30-year fixed mortgage rate on Zillow Mortgage Marketplace is currently 4.38 percent, up fifty basis points from 3.88 percent at this time last week. The 30-year fixed mortgage rate hovered between 3.82 and 4.0 percent late last week, before spiking up near the current rate over the weekend. This represents the highest rate on Zillow Mortgage Marketplace since July 2011. "Last week rates spiked up to levels not seen since July 2011 after Federal Reserve Chairman, Ben Bernanke reiterated the Fed's commitment to scale back its stimulus program later this year," said Erin Lantz, director of Zillow Mortgage Marketplace. "This coming week, we expect rates will be volatile as the market recalibrates and determines whether we've reached a new plateau near 4.5 percent or whether this week's rate spike was an overreaction that warrants a downward adjustment." Zillow's real-time mortgage rates are based on thousands of custom mortgage quotes submitted daily to anonymous borrowers on the Zillow Mortgage Marketplace site, and reflect the most recent changes in the market. These are not marketing rates, or a weekly survey. The rate for a 15-year fixed home loan is currently 3.41 percent, while the rate for a 5-1 adjustable-rate mortgage (ARM) is 3.18 percent.