Adding a lien holder to the property title

[Pandu Chimata]

Hello team, I am in the processing of borrowing money from a friend to rehab my flip. It's a private loan. As a collateral, I need to add his name in the title so that I pay off the amount when I am selling the property. 

How do I do this? This property is in San Bernardino city. Is there a specific form that I need to fill it out and get it registered? Any thoughts?