Average fixed-rate mortgages declined this week in the United States, according to Freddie Mac. The national average 30-year loan decreased 0.7% averaging 4.34% while the national average 15-year mortgage fell 0.9% averaging 3.38%.  Home prices are expected to rise by single digits this year, and inventory may fall after the spring buying season. Experts suggest that low inventory rates and rising prices may slightly hurt the market, but expect positive results as long as mortgage rates remain low. More here