Freddie Mac [1] reported this week in its Primary Mortgage Market Survey [2] that mortgage rates have changed very little this week in line with the Federal Reserve's monetary policy.

The stubbornness among mortgage rates has been present since the middle of May 2014 and will likely continue into 2015, or until the Fed allows rates to rise.

The 30-year fixed mortgage rate, generally the benchmark among rates, averaged 4.12 percent for the week ending July 31, a decline from 4.13 percent the week before.

Among 15-year fixed-rate mortgages, the average for the week decreased to 3.23 percent, a fall of 3 basis points from the week before.

Mortgage rates have fluctuated within a single tenth of a percentage point since the middle of May 2014, even as the United States gross domestic product has risen.