How do you get a mortgage with sister?

How do you get a mortgage with sister?
Just as you would with any other person that was not your spouse.Both of you will need to apply, and both of you will be liable for the payments. Assuming that you're applying for a mortgage on a house, the mortgage company will want to know if both (or either) of you will be occupying the house, or if you'll be using it as investment property.Any bank or financial company should be able to walk you both through the process. One suggestion. Go to a lender that has an actual office where you can talk to a live human being. I have yet to see an internet lender actually come across with a better deal than you could get using a local lender.