Yes, it can be. You can use the information on the loan documents in place of a 1098 to enter the interest paid.
According to the IRS:
"For you to take a home mortgage interest deduction, your debt must be secured by a qualified home. This means your main home or your second home. A home includes a house, condominium, cooperative, mobile home, house trailer, boat, or similar property that has sleeping, cooking, and toilet facilities."
https://www.irs.gov/publications/p936#en_US_2018_publink1000229901
