Having just gone through a similar situation with my divorce/mortgage assumption I feel for your friend!
To answer your question, personally, I would say unless your buddy has a very large income and can be on great terms with his ex he’s gonna have to sell and split profits with her.
I kept my house and bought my ex out of her half. But that requires a number of things to even be possible. First to keep current interest rate the only option is for his current mortgage company to allow him to assume the mortgage in his name. That’s the only legal way to get her name off the current mortgage. Of course he can refi in his name alone, but then you lose the 2.5% interest rate.
I wanted to keep my 2.625% interest rate on my mortgage. My mortgage company allowed me to assume the Mortgage on my house. It took 9 months start to finish, $5000 worth of closing cost, another $1000 appraisal, not to mention a boatload of paperwork and proving my income/assets many times over, plus more stress/frustration than I’ve ever dealt with in my entire life!
Remember, if he wants to assume the mortgage he has to prove he has enough income to pay the mortgage plus all of his other bills all on his own. This often times is pretty difficult to do.
Thankfully, me and my ex are still very close friends (talk daily). If we weren’t, there is no way this would’ve worked for us. Like I said it took 9 months start to finish and then at the end I still had to pay her out her share of equity, 210K. She was extremely patient during the process, which I am very grateful for! If we weren’t on good terms, there’s no way this ever would’ve worked.
Based on personal experience, I’d say he has to answer three questions. Each one needs to be a yes, or it won’t happen.
1. Will the current mortgage company allow a mortgage assumption?
2. Is the X willing to be patient and wait (could be almost a year) for the Mortgage assumption to happen before being paid her equity?
3. Is the X willing to sign the divorce decree agreeing to the mortgage assumption and payoff with a long timeframe?
If he isn’t attached to the house and is looking at it as just a rental, plan to sell and avoid all the stress and headache of trying to keep it. Then go buy something else.