Cal. Health & Saf. Code § 4602.5
In cities within a county of the 20th class, as defined in Section 28041 of the Government Code, improvement shall also mean the acquisition, construction, maintenance, and operation of any public buildings which would serve as a community center facility, including, but not limited to, an exhibition building, an auditorium, a stadium, and a sports arena; and the acquisition and improvement of any land, rights-of-way, rights of use, or other property needed for any of the improvements described in this section, or for offstreet parking facilities therefor.
For the purposes of this section, at the hearing held pursuant to Section 4611, the governing body may exclude from the proposed district any territory the inhabitants of which would not be benefited by the proposed improvements as finally determined.
Ca. Health and Saf. Code § 4602.5