Airbnb Banned Parties Worldwide After a 2019 Halloween Shooting at a House Booked for a Family Reunion. By 2024 Its Software Was Deterring About 38,000 People in the United States From Renting a Whole House Over Halloween Weekend.
In late October 2019, a woman booked a large house in Orinda, California, through Airbnb. She told the owner she lived in Lafayette, that members of her family had asthma and needed to get away from the smoke of the Kincade Fire, and that she wanted to host a family reunion for about a dozen people. The listing said no parties.
On the night of 31 October, more than 100 people were at the house for what a since-deleted Instagram post had advertised as an "AirBNB mansion party". Shots were fired late in the evening. Five people were killed. Airbnb said it was horrified, banned the guest who made the booking, and removed the listing while police investigated.
The Announcement
On 2 November, Airbnb's chief executive, Brian Chesky, said on Twitter that the company was banning "party houses" and redoubling its efforts against unauthorized parties. He put a member of the executive team in charge of a new rapid response team and a ten-day sprint.
Four days later, in a post titled "In The Business Of Trust", the sprint produced a list. Every one of the seven million listings on the platform would be verified. A neighbour hotline would be staffed around the clock. And from 15 December, Airbnb would expand manual screening of "high-risk reservations", starting in North America and going global through 2020. Until then, checking the stranger who wanted a house for the night had largely been left to the stranger's reviews and to how far the host believed what the stranger said.
The Temporary Measure
By the summer of 2020, Airbnb was stopping guests under 25 without a record of positive reviews from booking entire homes close to where they lived. In August 2020 it announced a global ban on all parties and events, and capped occupancy at 16. The stated reason was public health: with bars and clubs closed, the company said, some people had taken bar and club behaviour into homes rented through its platform.
The same announcement removed the "event-friendly" search filter and the option for hosts to mark parties and events as allowed. One-night bookings of entire homes over Halloween weekend were blocked in the United States and Canada. Guests who broke the rules were told they could face legal action.
The ban was described as in effect until further notice.
Further Notice
Further notice arrived in June 2022. Airbnb said the temporary ban had proved effective, reported a 44 percent year-over-year drop in the rate of party reports, and made it permanent. The 16-person cap was dropped. More than 6,600 guests had been suspended in 2021 for trying to break the ban.
This is the ordinary life cycle of an emergency measure. It is introduced for a reason that will pass, the reason passes, and the measure is found on inspection to have been working, which is also a reason to keep it.
The Machine
Manual screening did not stay manual. In August 2022 Airbnb brought what it called anti-party technology to the United States and Canada, after a pilot in Australia that it said cut unauthorized parties by 35 percent. The system weighs a guest's history of positive reviews, how long they have had an account, the length of the trip, whether it falls on a weekend, and the distance between the guest's home and the house. Guests it flags cannot book the entire home. They remain free to book a room in one where the host is present.
The system is now turned up for holidays. Airbnb said that over Halloween 2024 approximately 38,000 people in the United States and 6,300 in Canada were deterred from booking entire homes. Over New Year's Eve, more than 20,000 people in the United States and more than 3,000 in Canada were blocked. By late 2025 the company reported a decrease of over 50 percent in the global rate of party reports, and fewer than approximately 0.035 percent of stays leading to an allegation of a party at all.
The Profile
The booking in Orinda did not look like a party. It looked like a local person with asthmatic relatives wanting a large house near home for a family gathering during a wildfire. That description is now, more or less, the profile of a high-risk reservation: a guest who lives nearby, wants a whole house, and wants it on a holiday weekend.
Tens of thousands of people who fit it are blocked every Halloween, or redirected to a private room or a hotel. The reviews-and-good-faith arrangement that let a stranger rent a house for a family reunion still exists, for guests with enough history to show they have not needed it.
Filed from public reporting:
- KTVU FOX 2 — "Four dead, others injured at Halloween party in Orinda; Airbnb 'horrified' about tragedy"
- TechCrunch — "Airbnb to ban 'party houses' in wake of Halloween shooting that left 5 dead"
- Airbnb Newsroom — "In The Business Of Trust"
- AFAR — "Airbnb Caps Occupancy at Rentals, Announces 'Global Party Ban'"
- NBC News — "Airbnb makes its party ban permanent"
- CBS News Texas — "Airbnb launches 'anti-party technology' in U.S. and Canada"
- Airbnb Newsroom — "Rolling out our anti-party system for Halloween"
- Airbnb Newsroom — "Launching our anti-party technology for New Year's Eve stays"
