Generally, most mortgage companies will require you to refinance  your “ex”‘ off the mortgage. They probably will not allow you to have a deed recorded to take him off. This is because it’s likely that his income and credit was also used to qualify for the loan. You will need to apply for a new mortgage and qualify for it on your own. As part of a refinance, a title company can prepare a Quit Claim Deed to be recorded at closing.