Who handles Freddie Mac Loan Assumption

[Helen Chong]

I am currently purchasing a property that has a Freddie Mac loan assumption available with 4.82% rate, 9 years remaining and 30 years amortization. The income and LTV can cover another 2nd loan as well.

I am wondering do I need to use the original lender who originated the Freddie Mac loan for the loan assumption? Or I can shop for the cheapest fee? The one seller referred me to has a lot of fee, and I feel like it's more than what I would have paid on a new loan. 

Secondly, am I allowed to get a 2nd loan along with this loan assumption? I did my calculation, I can still borrow another $250k to meet the 1.25 DSCR and 80% LTV.