I am assuming you are renting the house you currently live in... if that is the case, you are afforded certain rights which should be outlined in your Lease Agreement or according to the Landlord Tenant Law in California.
There is typically a notice period that the Seller must afford you (e.g. 30 or 60 days, etc.) before the Seller can ask you to vacate the property. That is probably your only right to this property.
If you are interested in making an Offer on the property, I would quickly contact an Agent and have them help you formulate an Offer. If the property is already in escrow, it may be too late. Call the Listing Agent and find out the status before you go through all the work.