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The purchase application index has been highlighted as a particularly important data series as it very broadly captures the demand side of residential real estate for both new and existing home purchases.
The latest data is showing that the average rate for a 30 year fixed rate mortgage (from FHA and conforming GSE data) increased a notable 12 basis point to 4.66% since last week while the purchase application volume increased 2% and the refinance application volume declined 5% over the same period.
Rates continuing to rise after some settling and following weeks of explosive increases that saw a rise of over 100 basis points seemingly directly correlated with the Feds recent suggestion that they may start to "taper" the GSE and treasury purchases later this year.
The following chart shows the average interest rate for 30 year and 15 year fixed rate mortgages since 2006 as well as the purchase, refinance and composite loan volumes (click for larger dynamic full-screen version).