Mortgage rates remain under 3 percent for third week in a row

The survey is based on home purchase mortgages, which means rates for refinances may be higher. The price adjustment for refinance transactions that went into effect in December is adding to the cost. The adjustment, which applies to all Fannie Mae and Freddie Mac refinances, is 0.5 percent of the loan amount. That works out to $1,500 on a $300,000 loan.