California Code, Government Code - GOV § 53036

No local agency as defined in Section 54951 shall sell, lease, or otherwise transfer real property owned by it and lying between the high water line of the Pacific Ocean and the public street or highway nearest the Pacific Ocean without reserving to the public the right of access over such real property, unless such local agency or its grantee shall make available to the public an alternate route which, in the judgment of the local agency, gives equal or greater public access to the Pacific Ocean in the same immediate vicinity.

Any public access right or rights identified or provided pursuant to this section shall be expressly described in any document effecting the sale, lease, or transfer of such real property.