The 30-year fixed mortgage rate on Zillow Mortgage Marketplace is currently 4.76 percent, down four basis points from 4.8 percent at this same time last week. The 30-year fixed mortgage rate fluctuated between 4.76 and 4.82 during the past week.

The rate for Washington dropped 5 basis points, from 4.82 percent to 4.77 percent.

Zillow's real-time mortgage rates are based on thousands of custom mortgage quotes submitted daily to anonymous borrowers through its Web site, and reflect the most recent changes in the market. These are not marketing rates, or a weekly survey.

The rate for 15-year fixed home loans is currently 4.24 percent, while the rate for 5-1 adjustable-rate mortgages is 3.47 percent.

The total volume of mortgage requests during the past week was down 5 percent compared to the prior week. Of last week's requests, 32 percent were for refinance loans, 66 percent were for purchase loans and 2 percent were for home equity loans. The prior week, 32.2 percent of requests were for refinance loans, 65.8 percent were for purchase loans and 2 percent were for home equity loans.