Santa Rosa, CA Public Conduct: Loud Party Ordinance (2026)

Chapter 10-28, titled "Minor Alcohol Offense/Loud Parties," targets both underage drinking and disruptive gatherings. 030 makes it unlawful to suffer, permit, allow or host a party, gathering or event at a residence or other private property under one's control where five or more people under 21 are present and alcoholic beverages are possessed or consumed by anyone under 21, subject only to the narrow California Constitution Article I, Section 4 exception. "Person responsible for the event" is defined to reach the owner, renter, lessee or other person controlling the premises, the person in charge, and the organizer; if that person is a juvenile, the chapter makes the juvenile and their parents or guardians jointly and severally liable.

020 to include officer salaries and benefits for time spent responding, administrative costs, medical treatment for injured officers, and repair or use of City equipment. 050 separately bars anyone under 21 from possessing or consuming alcohol at a place not open to the public unless supervised by a parent or guardian. The chapter dates to Ordinance 2999, adopted in 1992, and has not been substantively amended since.