Cal. Civ. Proc. Code § 2101 — UNIFORM FEDERAL LIEN REGISTRATION ACT

(a) Notices of liens, certificates, and other notices affecting federal tax liens or other federal liens must be filed in accordance with this title.

(b) Notices of liens upon real property for obligations payable to the United States and certificates and notices affecting the liens shall be filed for record in the office of the recorder of the county in which the real property subject to the liens is situated.

(c) Notices of federal liens upon personal property, whether tangible or intangible, for obligations payable to the United States and certificates and notices affecting the liens shall be filed as follows:

(1) If the person against whose interest the lien applies is a corporation, a limited liability company, or a partnership whose principal executive office is in this state, as these entities are defined in the internal revenue laws of the United States, in the office of the Secretary of State.

(2) If the person against whose interest the lien applies is a trust that is not covered by paragraph (1), in the office of the Secretary of State.

(3) If the person against whose interest the lien applies is the estate of a decedent, in the office of the Secretary of State.

(4) In all other cases, in the office of the recorder of the county where the person against whose interest the lien applies resides at the time of filing of the notice of lien.