unlike closing new mortgage costs, your prepaying penalty really does change from lender to lender and from loan to loan.
The costs for a loan that has another 5 years will be different than these of a newly aquired loan, plus it usually depends upon the interest rate in your original mortgage vis a vis the common interest rate in the market today.
Prime Mortgages prepayment penalty  - Most prime borrowers avoid prepayment penalties, especially if you refinance your mortgage with your current lender.

Sub-Prime Mortgages prepayment penalty - lenders normally demand prepayment penalties on sub-prime loans because the risk of refinancing them is higher. since sub-prime loans have higher interest rate – it is more likely that when refinancing, the bulk interests difference will cause a higher prepayment penalty.

The only way to get out of your contractual obligation to pay a prepayment penalty is to ask the lender to waive it. Considering that you are terminating a relationship with them to start a new mortgage – the answer would usually be “no”. Sometimes the waiver will be attained when you refinance your loan with the same lender, but this may harm the new mortgage consitions and result in higher intrerest rate that will make refinancing not worht-while.

make sure you include the prepayment penalty in your new mortgage calculations or even in the new princiapal!

proceed to closing costs