2 sisters on deed & mortgage of a house the sister with better credit score dies, what happens to the house?

The remaining sister owns it & as long as she continues to make payments, all's well.

You should probably be talking to an estate attorney... laws differ from state to state.. On the surface.. if you own a home with your sister and she passes, then so long as you continue to make payments, everything is fine.. But if your sister had a will, and she left her ownership in the home to someone else, then that could be a problem.. Or if she did not have a will, then her equity could be in jeopardy if there were other obligations owed, and probate would have to sort things out... not a cut and dry answer.. I'm a Broker here in Scottsdale AZ and I only lend in Arizona. If you or someone you know is looking for financing options, feel free to contact me or pass along my information. 480-287-5714 WilliamAcres.com

Nothing happens to the house unless the surviving sister cannot afford to pay the mortgage. If that's the case, then the house should be sold. If she CAN afford the mortgage and taxes there is no need to do anything with the mortgage - just leave it in place. It does not need to get refinanced. However, DO check with an attorney to determine how the title was held and whether the deceased sisters heirs have any claims to the property. If there are heirs, that could change everything.

do you have a will and trust?? linda i just spend the last 1/1/2 years in probate for my parents that passed..