I am not an attorney, but, common sense warrants that you are both part-owners in the property since you are both on the deed. For your friend to refinance, it would seem he/she would have to get your permission because, normally when re-financing, the original trust(s) are paid off via the new trust(s), but in order to get the new trust(s), one must apply for a whole new mortgage. Since rates are lower now, if you wanted out of the arrangement, now would be a good time to do that. One hopes that you had an equity agreement in place as to payments, expenses, and equity-sharing that fully spells out each person's obligations. If you wanted to continue to own the property and you did not have a written, equity agreement in place, this would be an opportune time to have an attorney draw one up - it protects you and it protects your friend. Keep in mind, if you join your friend in obtaining a new mortgage(s) with your name on it also, you are just as responsible as your friend for payments, whether you live in the home or not. If your friend doesn't make the payment, you are responsible for it; otherwise, non-payment will wreck your credit. A problem would be if the property now has a lower value than the original trust(s); whereby cash would be needed to fully pay off the original trust(s). If the value is lower and you/your friend do not have the cash to make up the difference, there is no way a re-finance can happen.