The following information is for general informational purposes only and should not be considered legal advice. If you wish to record any particular document; we suggest that you consult a real estate professional or an attorney.The recorded document substitutes a trustee of a trust, mortgage, or other similar document. L. This is a transfer of property: 1. Welcome to the Contra Costa County Clerk-Recorder's Official Records Index. A deed of trust is a commonly used mortgage document in California. A deed of trust, also called a trust deed, is the functional equivalent of a mortgage. Of Contra Costa County, a political subdivision of the State of California ("Lender") whose address is 30. Muir Road, Martinez, California 94553. 1. WITNESSETH: That Trustor IRREVOCABLY GRANTS, TRANSFERS AND ASSIGNS to TRUSTEE IN TRUST, WITH.