According to Freddie Mac, 30-year loan rates jumped to 3.91%, a 0.10% increase from last week. The average 15-year rate mortgage in the United States averaged 3.03%, increasing to the highest average seen in a year. Affordable mortgages have helped the economy and housing market grow, boosting home prices and sales since the housing recovery began. Additionally, home prices jumped 12.1% from April 2012 to April 2013, the largest increase seen  since early 2012. More here