The monthly mortgage bill on a typical existing single-family home is up $319 from a year earlier.
Mortgage rates have climbed two percentage points from the end of last year.
At 5%, borrowers with a $300,000 mortgage would pay $1,610 a month, up $327 from the end of last year.
The average for a 30-year fixed jumbo mortgage was 4.48% last week, compared with 4.95% for a conventional loan.
Home shoppers' concerns about overpaying are giving way to fear of missing out.
As wealth flees cities for suburbs and exurbs, there aren't enough big homes to go around.
Costs for 30-year loans hit a more than two-year high of 3.69% last week.
The flight away from urban areas to healthier, safer and wealthier suburbs continues.
The average monthly payment on a $300,000 mortgage would be $1,301, up from $1,209 a year ago.
New York and other coastal cities are making a comeback as more workers return to the office.