Property, whether owned or leased, which as of the lien date (January 1), is used for libraries and museums that are free and open to the public.
Links
[1] https://sfassessor.org/forms-notices/forms/exemptions
[2] https://sfassessor.org/forms-notices/forms/members-public
[3] https://sfassessor.org/%3Cspan%20class%3D