Home loan borrowing costs fell for the second week in a row, pulling the average long-term U.S. mortgage rate to its lowest level since early February — good news for prospective home shoppers as the spring homebuying season gets underway.

The average rate on a 30-year mortgage dropped to 6.74% from 6.88% last week, mortgage buyer Freddie Mac said Thursday. A year ago, the rate averaged 6.60%.

Borrowing costs on 15-year fixed-rate mortgages, popular with homeowners refinancing their home loans, also fell this week, pulling the average rate down to 6.16% from 6.22% last week. A year ago it averaged 5.90%, Freddie Mac said.