Other rates included: 15-year, fixed-rate, up 0.01 to 5.60 percent; five-year adjustable-rate ...Thirty-year fixed-rate mortgages averaged 6.05 percent this week, down 0.01 percent from last week, mortgage giant Freddie Mac reported Thursday. Once you obtain all these information, ask for the same information from other lending companies. In this way, you can start comparing the costs of each loan and decide which one has the best mortgage rate.