Long-term adjustments completed under the president's foreclosure prevention plan increased to 66,465 at the end of December. This is 7.4 percent of all trial modifications started, up from 31,382 in the previous month.

The Obama administration has put in more pressure to loan servicers to ramp up the amount of permanent modifications they offered to delinquent borrowers.

The Treasury Department in a report released Friday said that another 46,056 modifications is expected pending borrowers' final signatures while another 48,924 were denied permanent modifications as they failed to meet the program’s criteria which are to make on time trial payments and submit the required paperwork namely such as proof of income and a letter explaining the reason for their financial difficulty.

On the other hand, the number of delinquent homeowners in trial modifications increased to 787,231, from 697,026 in the previous month.

"Treasury is committed to working with servicers and borrowers to sustain this improved pace," said Phyllis Caldwell, chief of Treasury's Homeownership Preservation Office.

Administration officials has increased pressure on servicers in November after experiencing a slow pace of conversions to permanent modifications which elicited concerns that the $75 billion plan will fail to meet its goal to help up to 4 million troubled homeowners.