i have a rental property plus the house i live in and want to get rid of both so i can move to another state.
my renter want to buy the house but there credit is not the best.
Most lenders do not allow one to assume a mortgage; some do, however. If the mortgage is assumable, then they will usually allow it if the buyer meets credit criteria.
Most conforming loans do not allow this because it makes for a loophole where people who do not have good credit can get a loan designed for somebody with better credit.
Call your mortgage company anyhow, the worst they can do is say no.