California, Pasadena. I am a single woman and am buying a home with my down payment and my good credit. My boyfriend (bad credit) and I will live in the home. He will make all payment for everything and also take interest and property tax deductions. Since I have made the down-payment and the loan is in my name, how, and at what point, can/do I add him to the title. We would want our previous property to be serate and no co-mingled with this property. He would like some security that after a certain amount of time he will also have the benefit of ownership, and, not be vicitim to being kicked out. What is the best contractural arrangement for this situation? Thank you. Also, I have a seperate trust for other assets & children and will not co-mingle them. He does not have assets but he does have children that he will exclude from any inheritance.