Cal. Penal Code § 653c

(a) No person required to register as a sex offender pursuant to Section 290 for an offense committed against an elder or dependent adult, as defined in Section 368, other than a resident of the facility, shall enter or remain on the grounds of a day care or residential facility where elders or dependent adults are regularly present or living, without having registered with the facility administrator or his or her designees, except to proceed expeditiously to the office of the facility administrator or designee for the purpose of registering. (b) In order to register pursuant to subdivision (a), a sex offender shall advise the facility administrator or designee that he or she is a sex offender; provide his or her name, address, and purpose for entering the facility; and provide proof of identity. (c) The facility administrator may refuse to register, impose restrictions on registration, or revoke the registration of a sex offender if he or she has a reasonable basis for concluding that the offender’s presence or acts would disrupt, or have disrupted, the facility, any resident, employee, volunteer, or visitor; would result, or has resulted, in damage to property; the offender’s presence at the facility would interfere, or has interfered, with the peaceful conduct of the activities of the facility; or would otherwise place at risk the facility, or any employee, volunteer or visitor. (d) Punishment for any violation of this section shall be as follows: (1) Upon a first conviction by a fine of not exceeding two thousand dollars ($2,000), by imprisonment in a county jail for a period of not more than six months, or by both that fine and imprisonment. (2) If the defendant has been previously convicted once of a violation of this section, by imprisonment in a county jail for a period of not less than 10 days or more than six months, or by both imprisonment and a fine of not exceeding two thousand dollars ($2,000), and shall not be released on probation, parole, or any other basis until he or she has served at least 10 days. (3) If the defendant has been previously convicted two or more times of a violation of this section, by imprisonment in a county jail for a period of not less than 90 days or more than six months, or by both imprisonment and a fine of not exceeding two thousand dollars ($2,000), and shall not be released on probation, parole, or any other basis until he or she has served at least 90 days. (e) Nothing in this section shall preclude or prohibit prosecution under any other provision of law.