Your father's home is located in CA, a community property state. If your father died without a will, the default beneficiary is your step mother. If he has a will, the will would state about the disposition of the estate assets. Unless your step mother is good with paperwork, she needs to see a probate attorney to start the probate process. If your father has a living trust, the will within the living trust will direct the trustee of how to dispose of his shares of the community property assets. If the will does not have you listed as an heir with rights to the assets, you are locked out of the inheritance. Of course, you can always retain the service of a probate attorney or a real estate attorney to contest the will. Good luck and keep me posted.