NEW YORK (CNNMoney.com) -- Mortgage rates continued to decline this week, plunging to the lowest level in decades, according to surveys from Freddie Mac and Bankrate.
Freddie Mac's weekly report said the 30-year fixed rate slipped to 4.44% for the week ended Thursday, the lowest since the government-backed lender began tracking the rate in 1971. Last week's rates stood at 4.49%, and a year ago it was at 5.29%.
The 15-year fixed rate fell to 3.92% this week, the lowest since Freddie Mac began tracking it 1991, down from 3.95% last week and from 4.68% a year ago.
Adjustable-rate mortgages also declined, with the 5-year rate falling to 3.56% this week, the lowest since 2005 when the lender began tracking it.
Mortgage tracker Bankrate.com, which surveys large lenders across the country, said the average 30-year fixed loan sank to a record low for the fourth consecutive week, falling to 4.57% from 4.66% the previous week.
The 15-year fixed rate, which is a popular option for refinancing, also fell to the lowest level in the history of Bankrate's 25-year old survey, dipping to 4.06%, from 4.11% the week before.
While the 1-year adjustable-rate mortgage held steady at 4.8% for a fourth week, the 5-year adjustable rate mortgage dropped to a record low of 3.92% from 3.95% the previous week.
"Low rates are helping to heal many battered local housing markets by increasing home-purchase activity, said Frank Nothaft, chief economist at Freddie Mac.
|Overnight Avg Rate||Latest||Change||Last Week|
|30 yr fixed||4.41%||4.44%|
|15 yr fixed||3.33%||3.31%|
|30 yr refi||4.39%||4.41%|
|15 yr refi||3.31%||3.30%|
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