How long does probate take in California

[Simon Ruiz]

Hello I have a lead on a house I'm looking to buy long story short the house has gone into Pre-foreclose and now has an assigned trustee.. I now suspect the house will go through probate even tho no aires are interested in the property (Out of state) Now that the 90 day window has passed how long does the probate process take? is it even necessary if No aires hire a lawyer to take a clam to the property?