Neighbors have been complaining about party-goers who make a mess of their yards, clog their quiet streets and play loud music until dawn.
The Malibu City Council has passed a new law to crack down on the use of rented mansions for promotional events.
Councilman Andy Stern, who sponsored the new ordinance, says the 24-7 parties are "horrible."
The council will consider final approval later this month.
If passed, the party not-so-hearty law would go into effect next month, just in time for beach party season.
