The law in California is that the Lender will file a notice of default on the property. Once they order the foreclosure they must follow the rules and that is 3 months and 3 weeks before it is auctioned off. Visit the http://www.dre.ca.gov for more details on rights and laws of tenants and foreclosures.
Has the family member explored all options? It would be in their best interest to understand if it is owner occupied and they turn it into a rental how that could possibly affect their liability under the foreclosure law. A real estate attorney and CPA are good resources for Law and Tax implications.
They may want to explore if a short sale is an option. This gives them the control of vacating the house. It sometimes can prolong the foreclosure, and in some situations some lenders are offering a relocation allowance $ to the homeowner.
I could refer them to an agent in that area to assist with the resources available.