Mortgage rates hit all-time record lows this week while activity in the housing market slowed in May following the expiration of the homebuyer tax credit. Freddie Mac began collecting rates for 30-year fixed loans in April 1971.
 
Freddie Mac today released the results of its Primary Mortgage Market Survey in which the 30-year fixed-rate mortgage averaged 4.69%, down from last week when it averaged 4.75%. Last year at this time, the 30-year averaged 5.42%

The 15-year this week averaged 4.13%, down from last week when it averaged 4.20%. A year ago at this time, the 15-year averaged 4.87%.