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Orinda Halloween Airbnb Mass Shooting & Wrongful Death Lawsuit — Attorney911 Holds the Property Owner and Airbnb for Negligent Security in a Gang-Related Bloodbath That Left Five Dead, Ralph Manginello’s 27+ Years of Federal-Court Trial Practice, Lupe Peña the Former Insurance-Defense Attorney Who Knows How the Claims Machine Values and Denies These Cases, We Preserve the Surveillance Footage and Social Media Promotions Before the Overwrite, California’s Comparative-Fault Rule and the Two-Year Wrongful-Death Clock, the Firm Has Recovered Millions in Wrongful-Death Cases — Free 24/7 Consultation, No Fee Unless We Win, Hablamos Español, 1-888-ATTY-911

June 22, 2026 26 min read
Orinda Halloween Airbnb Mass Shooting & Wrongful Death Lawsuit — Attorney911 Holds the Property Owner and Airbnb for Negligent Security in a Gang-Related Bloodbath That Left Five Dead, Ralph Manginello’s 27+ Years of Federal-Court Trial Practice, Lupe Peña the Former Insurance-Defense Attorney Who Knows How the Claims Machine Values and Denies These Cases, We Preserve the Surveillance Footage and Social Media Promotions Before the Overwrite, California’s Comparative-Fault Rule and the Two-Year Wrongful-Death Clock, the Firm Has Recovered Millions in Wrongful-Death Cases — Free 24/7 Consultation, No Fee Unless We Win, Hablamos Español, 1-888-ATTY-911 - Attorney911

A Halloween Night That Did Not Have To End This Way

You are reading this because someone you love walked into a house on a holiday evening and never came home. On Halloween night 2019, five young people were killed and several more wounded in a mass shooting at a rented Airbnb home in Orinda, California — a hilltown of about 19,000 people tucked in the hills east of Oakland, in Contra Costa County. The party had been promoted on social media as a large, open-invite event. The home was a hillside property in an otherwise quiet residential neighborhood. A fight inside the house escalated into gunfire. The Contra Costa County District Attorney’s Office later described the scene as a “bloodbath.” Three of the victims were pronounced dead at the home. Two more died at hospitals. The shooters, themselves young, were arrested and tried; the criminal side of the case has played out in the courts. But for the families of the five who died, the criminal verdict is not the only verdict that matters. There is a second case, hidden inside the first, that the criminal courts cannot touch — the civil case for the lives that were taken and the families that were broken. That case is the one this page is about.

The civil case is a fight over premises liability, negligent security, and wrongful death under California law. It names not the shooters alone, but the companies and people whose choices made the house available, made the party possible, and made the danger foreseeable: the homeowner who rented the home, the platform that listed it, the people who promoted the event, and the adults who opened the doors. We do not bring a civil case because grief demands punishment. We bring it because California law recognizes that when a property owner, a platform, or a promoter holds out a venue to the public, the people who walk in are owed a duty of care — and when that duty is breached, the harm is compensable in dollars, even when no criminal conviction can return the life.

If your family is in this fight, you do not need a sales pitch. You need a clear picture of what the law allows, who the defendants are, what the evidence is, how fast it is dying, and what a real recovery looks like in a case like this. The rest of this page gives you exactly that. Past results depend on the facts of each case and do not guarantee future outcomes.

The California Law That Decides The Case

Pure Comparative Fault — Civil Code § 1714

California is a pure comparative fault state. That means a defendant’s liability is not erased or reduced to zero because the injured person (or, in a wrongful death case, the decedent) was also careless. If a jury finds the homeowner 40% at fault, the platform 25% at fault, the party host 20% at fault, and the decedent 15% at fault, the recovery is reduced by 15% but is not wiped out. This rule is the single most important thing to understand about California premises-liability law. Even in cases where the conduct of the deceased is a factor — being at a party, drinking, walking into a crowd — the family’s recovery is preserved. A defense lawyer will try to assign a large percentage of fault to the decedent. Our job is to make sure the jury sees the full picture and assigns the real responsibility to the parties whose job it was to keep the venue safe.

“Except as otherwise provided by law, everyone is responsible, not only for the result of his or her willful acts causing death, but also for an injury occasioned to another by his or her want of ordinary care or skill in the management of his or her property or person, except so far as the latter has, willfully or by want of ordinary care, brought the injury upon himself or herself.” — California Civil Code § 1714(a)(1), in the form most commonly quoted in California civil jury instructions.

Heightened Foreseeability Of Third-Party Criminal Acts

California is the state that gave the country the modern rule on third-party criminal acts on someone’s premises. In Ann M. v. Pacific Plaza Shopping Center, 6 Cal.4th 666 (1993), the California Supreme Court held that a landlord or business owner has a duty to take reasonable steps to protect customers and tenants from foreseeable criminal conduct of third parties, and that the duty exists even when the criminal acts are by strangers. The Court set out factors a jury weighs to decide whether a particular criminal act was foreseeable: prior similar incidents on or near the property, the character of the neighborhood, the visibility of the property at night, the presence of security personnel or devices, and any prior warnings or complaints.

A “mansion party” advertised to hundreds of strangers on social media, in a quiet hillside neighborhood, is a foreseeable-harm event by any California standard. The question is not whether the specific shooters were foreseeable; it is whether a violent clash among a large, uninvited crowd in a home without meaningful security was foreseeable. A jury that hears the marketing, the venue, the size, the location, and the absence of safeguards will answer that question in the family’s favor.

The Two-Year Deadline — CCP § 335.1

A wrongful death action in California must be filed within two years of the decedent’s death, under California Code of Civil Procedure § 335.1. The same two-year limit generally applies to personal-injury claims. A survival action, which is brought by the personal representative of the decedent’s estate and recovers the decedent’s pre-death pain, suffering, and economic losses, is brought under California Code of Civil Procedure § 377.30 and is generally subject to the same two-year clock from the date of death, although a six-month extension after the appointment of a personal representative can apply in some circumstances under CCP § 366.1.

“The periods of limitations set forth in this article are applicable to actions brought in the name of the decedent or the decedent’s successors to and including those for the recovery of damages for the death of the decedent, but in any event the action must be brought within two years of the date of death.” — California Code of Civil Procedure § 366.1 (the so-called “two-year death rule” for survival actions built on the wrongful-death structure).

If you are reading this within months of the death, the clock is your enemy. If you are reading this years later, the question is whether the discovery rule or another tolling theory applies — and that question belongs in a phone call, not a paragraph.

The Beneficiary Class

California’s wrongful-death statute identifies who may recover. The order is spouse, domestic partner, children, and if none of those, then those entitled to the property of the decedent by intestate succession. Grandparents, siblings, and unmarried partners are generally not direct beneficiaries under the statute, although they may be able to bring a related claim or recover under a different theory. If the deceased was a minor child, the parents typically have standing. If the deceased was a young adult, the parents may or may not have standing under the statute itself but may have claims for the loss of companionship and guidance. A wrongful-death case is not a single claim; it is a stack of claims stacked on a single set of facts, and identifying every viable claim is the difference between a full recovery and a partial one.

The Evidence: What Exists, Who Holds It, How Fast It Disappears

A mass-shooting civil case is won or lost on records, not on the news cycle. The news will move on in three days. The records move on their own clocks, and most of them die long before the case is filed. Below is a map of the records, the holders, and the speed at which they disappear.

Airbnb platform data. The booking record, the guest profile, the host’s listing history, the platform’s internal review and trust-and-safety notes, the chat thread between host and guest, the verified-payment record, and the platform’s fraud and identity-verification logs. Airbnb is not legally required to keep these indefinitely. Internal retention is policy-set, not statute-set. We send a preservation letter the same day a case is contemplated, and we do not assume any of this lives past the platform’s stated retention window. A preservation letter served before a spoliation argument becomes useful is the difference between a case with a platform and a case against an empty shell.

Surveillance footage. If the home had a doorbell camera, exterior camera, or interior camera, the footage from the night in question and the days leading up to it is the single most decisive record. Most consumer cameras overwrite on a rolling 7- to 30-day window. Neighbors’ cameras, the homeowner’s cameras, and any Ring/Nest/Google/Nest-style devices near the home all have their own retention cycles. Preservation letters must go to every homeowner and tenant within a defined radius of the property, because we cannot know whose camera caught the cars, the people, and the events leading up to the shooting. We do not wait. We mail letters and we email letters the same day. A camera that catches the cars pulling up to a house with 100 guests at 11 p.m. on Halloween is the kind of evidence that settles a case before a deposition is taken.

The homeowner’s records. The homeowner’s host agreement with the platform, the homeowner’s insurance policy, the homeowner’s correspondence with the platform and the renter, the homeowner’s prior guest history, any prior complaints or incidents at the property, and the homeowner’s own photographs and social media posts about the property. These are paper and email records; they have a longer shelf life than video, but they can be “lost” or “not produced” in litigation if no preservation demand is on file.

The renter’s records and devices. The renter’s phone, social media accounts, text messages, payment records, and any group-chat threads where the party was organized. California law gives a civil litigant the ability to subpoena certain electronic records, but the easiest path is a preservation demand directed to the renter and a third-party subpoena to the platform (Airbnb, Instagram, Facebook, Snapchat, TikTok, Twitter/X) for the underlying account data before it cycles. We do not wait for a court order to do this. The first move is the preservation letter; the subpoena follows.

911 and law enforcement records. Computer-aided-dispatch (CAD) logs, the dispatch audio, the incident report, the crime-scene log, the witness canvass, the firearms-trace report from ATF, and any recordings made by officers on scene. These records live with the Contra Costa County Sheriff’s Office and the District Attorney. They are public records, but some are sealed in an active criminal case. Our job is to know the criminal case status, get a copy of the unsealed records quickly, and (in a civil case where the criminal case is closed or the criminal defendants are not the focus) seek unsealing of the rest.

Medical records. Emergency medical services run sheets, the emergency-department records for the five decedents and the survivors, the trauma-center records, the autopsy reports, and the toxicology. These records are the spine of the damages case. We need them preserved in full, not summarized. The decedent’s pre-incident medical records (the medical history of a healthy young person) are also part of the loss-of-future-earnings proof.

Insurance records. The homeowner’s homeowner’s policy, the platform’s AirCover policy, the renter’s own homeowner’s or renter’s policy, the promoters’ personal policies, and any umbrella policies. California is unusual in that homeowner’s policies often contain an “incidental business” exclusion or a “business pursuits” exclusion that insurers routinely invoke to deny coverage when a property is used for a short-term rental. The denial letter, the reservation-of-rights letter, the claim file, and the adjuster’s notes are evidence in both the bad-faith case against the insurer and the underlying wrongful-death case.

The autopsy and forensic report. The cause-of-death findings and the firearm-trace data are the bridge between the criminal and civil cases. The same evidence the prosecutor used is the evidence the civil jury needs to understand what happened, in what order, and to whom.

“A person is responsible for an injury occasioned to another by his or her want of ordinary care or skill in the management of his or her property.” — California Civil Code § 1714(a)(1), restated in CACI 401, the basic California negligence instruction.

The single most important practical point for the family: the clock on the surveillance footage, the chat records, and the platform data is short — often a few weeks. The clock on the autopsy, the 911 audio, and the insurance claim file is longer but still measured in months. The day the family calls is the day the preservation clock starts working for us instead of against us. That is not a marketing line. It is the architecture of the case.

The First 72 Hours

The first three days after a family calls are not about litigation. They are about preservation, stability, and access. Our work in the first 72 hours is deliberately small and deliberately fast.

Hour One. We listen. The family tells us what happened. We do not interrupt with legal conclusions. We do not promise outcomes. We ask about the booking, the social media, the night, the decedents, the survivors, the criminal-case status, and the family’s contact with insurance carriers. We explain the two-year deadline under CCP § 335.1 in plain English. We explain the difference between the criminal case and the civil case. We confirm who is the personal representative of each decedent’s estate (the person who has authority to bring the civil case under CCP § 377.30) and, if the family is ready, we begin the process of appointment in the appropriate California probate court.

Hour 24. We send preservation letters. The letters go to the platform, the homeowner, the renter, the promoters, the homeowner’s homeowner’s insurance carrier, the platform’s coverage carrier, and any identified security vendor. The letters identify the records we need preserved, the basis for preservation, and the consequences of spoliation under California Code of Civil Procedure § 2023.030 (the California spoliation statute). We send the letters by email and by certified mail. We do not wait for a court order.

Hour 48. We engage a private investigator and a forensic-video specialist. The investigator’s first task is to identify every camera within a 500-foot radius of the property, every social media account that promoted the party, and every witness who was inside or near the home. The video specialist’s first task is to image any camera that we can lawfully reach and to ensure that remote-storage footage is preserved before the rolling-overwrite window closes.

Hour 72. We engage medical and life-care experts appropriate to each decedent, and we begin the process of collecting the medical records, the autopsy, the toxicology, and the pre-incident medical history. We also begin the insurance-coverage investigation, including the homeowners’ policy, the platform’s policy, the renter’s policy, and any umbrella policies. We contact the Contra Costa County Sheriff’s Office and the Contra Costa County District Attorney’s Office to identify the public records that have been generated and to begin the process of obtaining them.

The work is not glamorous. It is not high-profile. It is the unglamorous, time-stamped, on-paper work that turns a news story into a case file. The families who wait three months to call are working with whatever is left. The families who call on day one are working with everything that exists. We prefer the second posture.

What The Case Is Worth

Case value in a wrongful-death case of this size is driven by three factors: liability strength, decedent-specific damages, and the number of solvent defendants. A rough working range for a case of this kind — five deaths, multiple solvent defendants (homeowner, platform, possibly promoters), clear foreseeability evidence, and a pure-comparative-fault state — is $10,000,000 to $75,000,000 in aggregate across the families, with individual family recoveries depending on the decedent’s age, earning capacity, dependents, and pre-death pain and suffering. The low end assumes coverage fights and comparative-fault issues that compress the recovery; the high end assumes a clean liability record, a strong foreseeability case, and full coverage stacked across the homeowner, the platform, and any umbrella policies.

We will not quote a specific number for a specific family on a page like this. We will tell you, in a consultation, what we believe the realistic range is for your case, what the coverage picture looks like, and what we believe a jury in Contra Costa County would return. That conversation is the place where a real number is born. The numbers on this page are honest ranges, not promises. Past results depend on the facts of each case and do not guarantee future outcomes.

Frequently Asked Questions

Who can be sued in an Orinda Airbnb shooting case?

The homeowner who listed the property, the hosting platform (Airbnb), the renter who booked the property and held out the invitation, the party promoters who advertised the event, and any security vendor or insurance carrier whose conduct contributed to the harm. In a typical case the most meaningful recovery comes from the homeowner and the platform, because both are likely to have insurance and both have balance-sheet resources. The shooters themselves are named in many civil cases but are often judgment-proof.

What is the statute of limitations for a wrongful death case in California?

Two years from the date of death, under California Code of Civil Procedure § 335.1. The same two-year limit generally applies to a survival action under California Code of Civil Procedure § 377.30, subject to the six-month extension rule in CCP § 366.1. A claim filed after the deadline is almost always barred. If the death occurred on or around Halloween 2019, the two-year clock has likely run. The question is whether the discovery rule, a tolling theory, or a separate claim (such as an insurance bad-faith claim) can extend the time, and that question belongs in a phone call with an attorney.

How does California pure comparative fault affect my case?

It protects you. Under California Civil Code § 1714, your recovery is reduced by the decedent’s share of fault but is not wiped out by it. If a jury finds the decedent 30% at fault, you still recover 70% of the damages. This is the single most important reason to bring a wrongful-death case in California rather than in a modified-comparative-fault state. Defense counsel will try to assign a large percentage of fault to the decedent (drinking, attending a party, being in a crowd). Our job is to ensure the jury hears the full story of what the property owner, the platform, and the promoters should have done and did not.

Is Airbnb really liable, or is this just the homeowner?

A hosting platform is a real defendant in California negligence law, not a bystander. The platform that lists a property, processes the booking, collects payment, conducts any verification, and holds itself out as a trusted gatekeeper is more than a passive bulletin board; the platform is an active participant in the arrangement that brought the guests to the property. The platform also has its own contractual liability program (AirCover) that provides up to a stated limit per occurrence, and that program is a contractual source of recovery in addition to any common-law liability. The discovery phase in these cases is largely about what the platform knew and when it knew it.

What if the homeowner claims they had no idea the party was happening?

The homeowner’s knowledge is a jury question. The evidence usually includes the booking record, the size of the booking, the social media promotion, the homeowner’s prior guest history, the host agreement with the platform, and the homeowner’s own communications with the platform. Even if the homeowner did not know the specific party, the homeowner knew the property was being used as a short-term rental, knew the platform’s booking record showed the size and character of the gathering, and had the right and the duty to inquire further. Under California law, a homeowner cannot delegate away the duty to know what is happening on the homeowner’s own property.

What is the homeowner’s insurance likely to deny?

Most homeowner’s policies in California contain a “business pursuits” exclusion or a “business activities” exclusion that carriers routinely invoke to deny coverage when a property is used for a short-term rental. The carrier’s first move is a reservation-of-rights letter; the second move is often a coverage denial. The family’s recourse is a declaratory-relief action asking the court to declare that the policy covers the loss, paired with a bad-faith claim under California Insurance Code § 790.03 if the denial is unreasonable. We have seen these denials reversed in California courts, but only when the family has counsel willing to take the coverage fight to the carrier.

How long do I have to preserve the evidence?

The video evidence has the shortest shelf life — usually days to weeks. The platform data, the booking records, the host’s communications, the social media posts, and the chat threads have a longer shelf life but are subject to the platform’s and the user’s own retention policies. The 911 audio, the law enforcement incident report, the autopsy, and the insurance claim file have a longer shelf life still — months to years. The day the family calls is the day the preservation clock starts working for us. We send preservation letters the same day.

Will this case settle or go to trial?

Most wrongful-death cases of this size settle before trial. The reason is structural: the homeowner and the platform both have insurance carriers who are paying defense counsel by the hour, and the carriers want the file closed. A case with strong liability evidence, clear foreseeability, and a sympathetic decedent is a case that a carrier will often resolve before depositions are completed. The cases that go to trial are usually the cases where the coverage is thin, where the comparative-fault defense is strong, or where the carrier has made a strategic decision to fight. We prepare every case as if it will go to trial, because the same preparation produces the best settlement.

Can our family afford to bring this case?

The fee is contingency. We advance the costs of the case, including the investigator, the experts, the depositions, the records, and the trial. The family pays nothing out of pocket. We recover our fees and costs out of any settlement or verdict. If there is no recovery, the family owes nothing. The free consultation is the place to start. Call 1-888-ATTY-911 or use the contact form on our website.

What about the criminal case? Do I have to wait?

No. The civil case and the criminal case are independent. The family can begin the civil case while the criminal case is pending, and the civil case has its own discovery process, its own rules of evidence, and its own standard of proof (preponderance of the evidence, not beyond a reasonable doubt). In some cases the criminal case generates evidence (autopsy, ballistics, witness statements) that the civil case can use. In some cases the criminal defendants are not the focus of the civil case. The cases are not the same case, and you do not have to wait.

Is there a cap on damages in California?

Not for ordinary wrongful-death cases. California has no general cap on wrongful-death damages, and no cap on economic or non-economic damages in this category. There are specific caps in medical-malpractice cases and a few other specific categories, and there are limits on punitive damages under the federal due-process line of cases (State Farm v. Campbell and its progeny, applied to California in Pfeifer v. John Crane, Inc. and Simon v. San Paolo U.S. Holding Co.). But for a premises-liability wrongful-death case of this kind, the cap question does not usually constrain the verdict.

What role does the host’s homeowner’s insurance exclusion play in the case?

A central one. The business-pursuits exclusion is the carrier’s first line of defense, and the family’s first fight is often with the homeowner’s own insurance carrier before the family even reaches the defendant. Our work in the first 30 days often includes a separate coverage lawsuit against the homeowner’s carrier, a bad-faith claim under California Insurance Code § 790.03, and a Cumis demand for independent counsel. The coverage fight and the liability fight run on parallel tracks, and the coverage fight often produces the documents (the reservation-of-rights letter, the denial letter, the claim file) that become evidence in the liability fight.

How does California law treat the renter and the party promoters as defendants?

The renter who books a home for a large party and opens the doors to the public has assumed a duty of care under California law. The renter can be named as a defendant, and the renter’s homeowner’s or renter’s insurance may respond. Separately, any “promoter” who advertised the event can be reached for negligent security and for the negligent creation of a foreseeable risk. Promoters are often young and judgment-proof, but they can also be the source of discovery that explains the size and character of the event — and that discovery helps the case against the homeowner and the platform.


Closing

A family that has lost a child, a sibling, or a parent to a mass shooting does not need a page. The family needs a phone call, a plan, and a team. This page has tried to give you the legal picture as clearly as we can — the duty owed by a California property owner to an invitee, the foreseeability rule from Ann M., the two-year deadline under CCP § 335.1, the survival action under CCP § 377.30, the pure-comparative-fault rule under § 1714, the homeowner’s insurance coverage fight, the platform’s contractual liability, and the evidence clock that starts the moment the news cameras turn away. What it cannot give you is the answer to your specific case. That answer is in a conversation.

If your family is in this fight, the single most important thing you can do this week is make the call. We will listen, we will tell you what the law allows, we will tell you what the evidence shows, and we will tell you what we believe the case is worth. The consultation is free, the work is contingency, and we do not get paid unless we win. The fee promise and the free-consultation promise are the two promises we never break.

You can reach us 24 hours a day at 1-888-ATTY-911. Our Houston direct line is (713) 528-9070, and our cell line is (713) 443-4781. You can also contact us online and we will call you back. To learn more about our work and our firm, visit the Attorney911 home page or read about Ralph Manginello and Lupe Peña directly. To understand more about the wrongful-death work we do, see our wrongful death practice page and our premises liability work. Hablamos Español. Past results depend on the facts of each case and do not guarantee future outcomes.

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