How does self become the lien holder of a mobile home in which self and mother are already listed as registered owners the mobile home was completely purchased by self alone and self has the bos?

I can only assume that you have clear title or one that has been signed off by the original lender.

You will simply need to re-title the home with a new application, which can be found at the below link:

http://www.chattelmortgage.net/mobile_home_Forms.html