California Code, Civil Code - CIV § 813

The holder of record title to land may record in the office of the recorder of any county in which any part of the land is situated, a description of said land and a notice reading substantially as follows: “The right of the public or any person to make any use whatsoever of the above described land or any portion thereof (other than any use expressly allowed by a written or recorded map, agreement, deed or dedication) is by permission, and subject to control, of owner: Section 813, Civil Code.”

The recorded notice is conclusive evidence that subsequent use of the land during the time such notice is in effect by the public or any user for any purpose (other than any use expressly allowed by a written or recorded map, agreement, deed or dedication) is permissive and with consent in any judicial proceeding involving the issue as to whether all or any portion of such land has been dedicated to public use or whether any user has a prescriptive right in such land or any portion thereof. The notice may be revoked by the holder of record title by recording a notice of revocation in the office of the recorder wherein the notice is recorded. After recording a notice pursuant to this section, and prior to any revocation thereof, the owner shall not prevent any public use appropriate thereto by physical obstruction, notice or otherwise.

In the event of use by other than the general public, any such notices, to be effective, shall also be served by registered mail on the user.

The recording of a notice pursuant to this section shall not be deemed to affect rights vested at the time of recording.

The permission for public use of real property provided for in such a recorded notice may be conditioned upon reasonable restrictions on the time, place, and manner of such public use, and no use in violation of such restrictions shall be considered public use for purposes of a finding of implied dedication.