In California there is no legal requirement for probate if the value of the estate is less than $100,000. 

The following links contain information about the transfer of small estates without probate.

Probate Court is a Court of General Jurisdiction which includes, but is not limited to the following proceedings; decedents' estates, trust proceedings, guardianship proceedings, conservatorship proceedings and minor's compromises.

Los Angeles Superior Court Transfer Form

Affidavit and instructions for the transfer of small estates without probate

Los Angeles Superior Court Probate Page

DMV Instructions and forms

Instructions for the transfer of a motor vehicle without probate

Affidavit for Transfer Without Probate California Titled Vehicle  (REG 5)

Statement of Facts (REG 256)