A Loved One Didn’t Come Home From a Beverly Hills Mansion Party — And Someone Is Responsible For That
The 911 call came in just before 12:45 a.m. on August 4, 2020. When Los Angeles Fire Department paramedics reached the 13200 block of Mulholland Drive — a stretch of narrow, twisting road carved into the Santa Monica Mountains above Beverly Crest — they found three adults down on the driveway outside a three-story mansion. Two women and one man. One of the women, believed to be around 35 years old, was pronounced dead at the hospital. A second woman was listed in grave condition. A fifth victim, another adult male, self-transported to a local hospital and was later released. A sixth, an adult female, was in stable condition.
She went to a party. She did not come home.
If that sentence is yours — if you are reading this because your daughter, your sister, your mother, or your friend was one of the five people who were shot on the driveway of a Mulholland Drive mansion while a DJ played and a food truck served food to nearly 200 people inside — then you are in the right place. We are the trial attorneys at Attorney911 — The Manginello Law Firm, PLLC. We have spent more than 27 combined years in California and federal courtrooms fighting for families who were failed by a property, a business, or a person who should have done more. Ralph Manginello leads our trial team. Lupe Peña, who spent years on the other side of these fights as an insurance-defense attorney before switching to fight for injured people, runs our day-to-day case strategy. We don’t get paid unless we win your case, and the first call is free: 1-888-ATTY-911.
This page is not a press release about the Beverly Crest mansion party shooting. It is a working legal analysis — of what happened, who may be held responsible, what records will prove your case, what the insurance companies are already doing, and what the next 72 hours of your life should look like. We have built it the way we build a case file: round by round, citation by citation, with the law’s own language translated into plain English.
The Single Most Important Question: Who Is Liable For a 200-Person Mansion Party Where People Were Shot?
When a shooting happens at a house party, the public instinct is to focus on the shooters. The criminal justice system will pursue them. But the civil justice system asks a different and more financially consequential question: Who else should have prevented this, and who is going to pay the family for what was taken? In California, the answer to that question almost always involves three or four separate parties — none of whom pulled a trigger, and all of whom can be sued.
Here are the defendants our trial team investigates in this fact pattern.
The Property Owner
Under California premises-liability law, the controlling case is Rowland v. Christian, 69 Cal.2d 108 (1968). A California landowner owes a duty of reasonable care to all persons on the property, regardless of whether the visitor is an invitee, licensee, or trespasser. The duty is not a loose one — it is calibrated to the foreseeability of harm and the relationship between the landowner and the harm.
A property owner who rents a $10,000-per-night mansion on Mulholland Drive to a party promoter and then allows 200 strangers to gather in the driveway is on notice, before any shot is fired, that the property is being converted into something radically different from a single-family residence. The Rowland duty is at its highest when the landowner’s own conduct — renting to a high-risk use, accepting a fee for that use, and standing by while it unfolds — creates the very environment where foreseeable third-party criminal conduct becomes likely. Once gunfire broke out, the foreseeable had already happened. The question is who profited from setting the stage and who is going to pay the family for what the stage cost.
A property owner who knew, or should have known, that a 200-person party with a DJ and a food truck was unfolding and did nothing to stop it has not just a moral problem. They have a legal one.
The Party Promoter and Organizer
The person or company that organized this party — the promoter who sold tickets, booked the DJ, arranged the food truck, and brought 200 people to a residential property — is a separate defendant with separate insurance and separate exposure. The promoter’s negligence is foundational: they selected the venue, controlled the guest list, set the security (or failed to), and made the decisions that turned a mansion into a 200-person event. When the venue is a single-family home in a residential canyon and the crowd is 200 strangers with alcohol, the promoter’s duty of care to those guests is enormous — and almost universally breached.
A promoter who stages a commercial event at a private residence during a pandemic, in violation of a county public-health order, with no professional security, and with guests arriving by the carload into a narrow Mulholland Drive driveway, is the architect of the conditions that allowed a shooting to become a multi-casualty event.
The Short-Term Rental Platform
A platform that listed a $10,000-per-night mansion for short-term rental, accepted a booking, collected a fee, and then — when the platform’s own public posture was that “this property is not listed on our site” — left the rental in place and let the booking stand, has its own potential liability under California negligence principles. The platform’s role is different from the owner’s. The platform is the gateway — the channel through which the property became a party venue rather than a single-family residence. The platform that knows or should know that a property is being used as a “party house” has duties, and a platform that washes its hands after the fact has a litigation problem.
This is not a theoretical question. Los Angeles has spent years fighting short-term-rental party houses. The Los Angeles City Council passed the “Party House Ordinance” — formally codified at Los Angeles Municipal Code (LAMC) § 12.21 A.5 and related provisions of LAMC Chapter 1A (added by Ordinance No. 185,514, effective May 18, 2018, with later amendments). That ordinance was specifically designed to address exactly the situation we are describing: a residential property being used for large, disruptive, short-term commercial events. It imposes obligations on hosts, property owners, and platforms — including requirements to disclose the party-house ordinance in listings, prohibitions on advertising for parties at residential rentals, restrictions on amplified sound outdoors, and enforcement mechanisms including fines. The property on Mulholland Drive that became a party venue on August 3, 2020, is the precise fact pattern the ordinance targets.
“It is unlawful for any person, including a Hosting Platform, to advertise, promote, or facilitate the booking or rental of a City of Los Angeles Residential Dwelling Unit for any event, party, or similar gathering that would otherwise be prohibited by this subdivision, including but not limited to listing, marketing, or otherwise holding out the availability of a Residential Dwelling Unit for such an event, party, or gathering.” — Los Angeles Municipal Code § 12.21 A.5 (codifying the Party House Ordinance), on hosts and platforms.
A platform that listed, marketed, or facilitated a booking for a 200-person event at a single-family mansion in the Santa Monica Mountains on a narrow residential street, in violation of a Los Angeles public-health order, is not insulated from civil liability simply because it claims to be a neutral intermediary. The Party House Ordinance was designed to pierce that defense.
The Private Security Firm (If Any)
Some large events at private residences involve hired security — off-duty police officers, licensed private security guards, or contracted security companies. If any security was hired for this event, that company is a separate defendant with its own insurance tower and its own duties. The negligence theory against a security company is straightforward: did it adequately screen guests at the entry point, did it maintain order inside, did it have a plan for ejection, and did it coordinate with local law enforcement? A 200-person event at a single-family home with no visible security is itself a foreseeable-harm fact.
The Government Entity — LAPD and the County Public Health Department
The record already establishes that LAPD received five noise/disturbing-the-peace calls starting at 6:30 p.m. — roughly six hours before the shooting. Officers went to the home, observed 200 people, and made a deliberate choice: they enforced traffic and parking violations but did not enforce the public-health order. The question of whether government actors are liable is governed by the California Tort Claims Act (Government Code § 810 et seq.), which requires a written claim to be presented to the public entity within six (6) months of the accrual of the cause of action. That deadline is short, rigid, and unforgiving. If a government claim is contemplated, it must be filed now — the statute does not wait for the family to grieve, and the public entity does not waive it for sympathy.
Government liability is a narrow lane — it requires showing the entity’s conduct was a substantial factor in bringing about the harm, not merely that responders could have done more — but the lane is real and it must be evaluated quickly.
What Records Exist, Who Holds Them, And How Fast They Disappear
This is the part of a case that decides whether the family wins or loses, and it is the part most families have never been told about. Evidence in a negligent-security case lives on a clock. Some of those clocks are short. The first letters our firm sends — the day a family calls — are preservation demands, and they are sent to every defendant and potential witness simultaneously.
Here is what we demand, and why each item matters.
The Property Owner’s Records
- Rental agreement and booking records. Who rented the mansion, for what stated purpose, for how long, and at what price. The booking trail is the spine of the case against the owner: it shows what the owner knew, what the owner was paid, and what the owner permitted.
- Prior rental history of the property. If the mansion had been used as a party venue before — and in the Beverly Crest / Hollywood Hills market, that is common — the prior-incident record establishes notice and foreseeability. A property that has had three prior large parties and a prior shooting or assault is a property whose owner cannot claim the August 4 shooting was a surprise.
- Communications between the owner and the booking party. Texts, emails, DMs, any platform messages about the nature of the event, the expected headcount, the security plan, and the cleanup. These are the documents that turn “they didn’t know” into “they knew.”
- Property-management and maintenance records. The homeowner’s own vendor, cleaning, and landscaping records often show how the property was being prepared and who was on site. Vendor invoices for the week of the shooting frequently show the property was being operated as a commercial event venue, not a private residence.
The Promoter’s Records
- Marketing materials for the event. Social media posts, paid advertisements, text-message blasts, ticket-sale records, vendor contracts, DJ contracts, food-truck contracts. These documents show the scale of the event, the target audience, and the planning. A promoter who advertised a 200-person event and then showed up with no security is documented from the inside.
- Guest list and ticketing records. Who paid, how much, and how they heard about the event. The guest list is also a witness list — and it is a list of people who saw what the property looked like, who was in charge, and what security was or was not present.
- Insurance policies. The promoter’s commercial general liability and event insurance. The coverage tower is a critical part of the damages calculus, and we serve an insurance-discovery demand on the promoter on day one.
- Communications with the property owner, the platform, the security company, and vendors. These messages frequently show the promoter’s actual role in the operation — the level of control — and frequently contain admissions of negligence once the shooting happens (“we should have had security,” “we thought the police would handle it,” “the host told us it was fine”).
The Short-Term Rental Platform’s Records
- The original listing and any version history. We want to know what the listing said at the time of booking and whether the listing advertised the property as suitable for events.
- The booking record and messaging history. Who booked it, what the booking platform communicated, and what the platform’s own content-moderation and trust-and-safety teams saw. A platform that has the booking record and the chat history has its own document retention obligation and its own litigation-hold exposure.
- The platform’s enforcement actions against the listing. If the platform later removed the listing or sanctioned the host, that removal is an admission that the listing violated platform rules — which the platform’s own terms of service usually prohibit, and which the Party House Ordinance requires the platform to prevent.
- The platform’s policies on party houses. The Party House Ordinance requires platforms to disclose and enforce. A platform that had a policy and failed to follow it is negligent on its own terms. A platform that had no policy failed its own duty of care.
The Police and Government Records
- LAPD dispatch records and CAD logs for the 13200 block of Mulholland Drive on August 3–4, 2020. The five calls starting at 6:30 p.m. are already public; we want every call, every officer’s body-worn camera, every dispatch comment, and every unit assignment.
- The 911 audio recordings for those calls. Audio is the most powerful evidence of what was actually reported and how it was triaged.
- LAPD’s crime-scene report and follow-up investigation file. The gang-related classification, the suspect descriptions, the shell-casing locations, the witness canvass — all of it.
- The Los Angeles County Department of Public Health records relating to the order, its enforcement, and any prior complaints about the property or the host.
- The Los Angeles City Planning and Code Enforcement records for the property, including any prior short-term-rental violations, prior Party House Ordinance citations, and any prior noise or nuisance complaints.
The Surveillance and Door-Camera Footage
- The mansion’s own doorbell and exterior cameras. Ring, Nest, SimpliSafe, or whatever the property was equipped with. Footage from the night of the shooting — and the days before — captures arrivals, departures, behavior, and the state of the property.
- The neighborhood’s doorbell cameras. Mulholland Drive is a residential street; the surrounding homes have cameras. A preservation letter to the immediate neighbors can save footage that will otherwise be overwritten on a rolling 14- to 30-day loop.
- Any on-site CCTV. Some high-end short-term rentals have internal security cameras in common areas (not in private spaces, which raise their own privacy issues — but in the driveway, at the gate, and in the public rooms of the property).
- The food-truck and DJ vendors’ cameras. Many event vendors carry their own cameras; those images may capture the crowd, the security posture, and the moments around the shooting.
How fast does this footage die? Most consumer doorbell cameras overwrite on a rolling 14- to 30-day cycle. Some overwrite faster. Professional CCTV varies. The day a family calls us, we are sending preservation letters by email and by overnight mail to the property owner, the platform, every doorbell-camera owner in the immediate neighborhood whose address we can identify from public records, the LAPD, and the vendors. The letters are not optional. They are the first thing we do.
The Decedent’s Personal Records
- The decedent’s employment records, tax returns, pay stubs, and benefits documentation. Wrongful-death damages are calculated in part from the economic support the decedent would have provided. We need every record that quantifies what she earned and what she would have earned.
- The decedent’s medical records for the period between injury and death. The survival action depends on what the decedent experienced; the records prove it.
- The decedent’s communications with family and friends in the days before the shooting — text messages, emails, social media. These tell the story of who she was, and they are how a jury understands the loss.
The Insurance Records
Every defendant carries insurance. Property owners carry homeowner’s insurance (often with a liability endorsement), commercial general liability if the property is used commercially, and umbrella coverage. Promoters carry event and CGL coverage. Platforms carry commercial general liability and errors-and-omissions coverage. Security companies carry professional liability. Government entities carry self-insurance with the claim procedure of the Tort Claims Act.
The coverage matters because it determines the real recovery. A defendant with $10 million in coverage is a real defendant; a defendant with $300,000 in coverage and no assets is a paper defendant. Our job is to find every policy and every layer and pursue them in parallel.
The Preservation Letter and the Spoliation Doctrine
California recognizes that a party who intentionally destroys evidence after a duty to preserve it has attached is subject to evidentiary sanctions — up to and including an adverse inference instruction that tells the jury to assume the destroyed evidence would have hurt the spoliator. The duty to preserve attaches when litigation becomes reasonably foreseeable — which, in a case like this, is the moment the property owner learns there was a shooting at his property. If surveillance footage is “lost,” if a phone is “wiped,” if social media is “deleted,” we ask the court to tell the jury to assume the missing evidence would have supported our case.
The preservation letter is not paperwork. It is the first weapon we file.
What California Law Says About How Much The Case Is Worth
We are often asked the dollar-value question first. The honest answer is: it depends on who the decedent was, what she earned, what she would have earned, who survives her, and how the jury in Los Angeles County will react to a young woman killed at a party that should never have happened. But we can put hard numbers on the categories California recognizes.
Economic damages. A 35-year-old woman in Los Angeles with a worklife of approximately 30 more years, earning (or capable of earning) the median Los Angeles wage plus benefits, represents decades of economic support. The forensic-economist math is built from the decedent’s worklife expectancy (how many years she was statistically likely to remain in the labor force), her historical earnings, her fringe-benefit multiplier (employer-sponsored health insurance, retirement contributions, paid leave — typically adding roughly 25% to 35% on top of wages), her expected wage growth, and the personal-consumption deduction (the share of income she would have spent on herself, which is subtracted because the family’s claim is for the support they would have received, not the gross paycheck). For a decedent with a 30-year worklife at a $70,000-to-$90,000 annual earnings band with benefits, the gross economic loss is in the seven figures before a single non-economic dollar is added.
Household services. Childcare, cooking, cleaning, driving, repair, household management — work that is unpaid but has a real replacement value, computed from the Bureau of Labor Statistics American Time Use Survey and replacement-wage data. A woman who was a mother or a homemaker or who contributed household services alongside employment may carry a household-services claim in the mid-six to seven figures depending on the mix and intensity.
Non-economic damages — loss of companionship, love, affection, guidance. California’s wrongful-death statute does not cap non-economic damages in a general case (caps apply to medical malpractice and a few other specific contexts; they do not cap a Beverly Crest negligent-security wrongful death). A Los Angeles jury asked to value the loss of a 35-year-old woman — mother, daughter, friend, partner — to the people who loved her, in a case where a property owner, a promoter, and a platform all took money for a party that should never have happened: the verdict on this line is a number a jury will write, and that number is typically seven figures to nine figures in cases with strong liability facts.
Punitive damages. California Civil Code § 3294 allows punitive damages where the plaintiff proves by clear and convincing evidence that the defendant acted with malice, oppression, or fraud. A property owner who rented a mansion to a 200-person party during a pandemic, in violation of a county public-health order, in violation of a city party-house ordinance, with five prior noise calls on the night of the shooting and no police response that closed the event down, has the kind of conduct that supports punitives. A promoter who organized a 200-person event at a private residence with no security, knowing the public-health order prohibited it, has the kind of conduct that supports punitives. A platform that listed a property for short-term rental, took a fee for the booking, and looked the other way when the listing was used as a party house has the kind of conduct that supports punitives. Punitive damages are designed to punish and deter, and they can multiply the compensatory award by a factor of one to four or more in cases with strong evidence of conscious disregard.
Range. Honest case-value range for a 35-year-old woman’s wrongful death in a strong negligent-security case in Los Angeles County: $2,500,000 to $25,000,000+, with the wide range driven by the quality of liability proof, the strength of the damages documentation, the identity and assets of the defendants, and the venue (Los Angeles juries have returned verdicts in this range and higher in comparable negligent-security and premises-liability cases). The low end assumes thin liability evidence; the high end assumes a strong liability case, a sympathetic decedent, and a defendant with the assets to pay.
Past results depend on the facts of each case and do not guarantee future outcomes. We will not promise a number before we have the file. We will tell you the range and the categories, and we will build a case designed to reach the top of that range.
How A Case Like This Is Actually Built — The Proof Story
From intake to verdict or settlement, here is how the case is built, step by step, in the order the law requires.
Week 1 — Preservation and intake. The preservation letters go out the same day. The intake interview covers the decedent’s biography, her work and family history, the events of August 3–4, 2020, the identity of any witnesses, and the location and preservation status of all communications. We file the government tort claim within days if LAPD is in play. We serve the insurance discovery demands (Cal. Code Civ. Proc. § 2017.210) on every known carrier. We identify the property owner of record through the Los Angeles County Assessor, identify the short-term rental platform through the booking trail, and identify the promoter through social media and ticketing records.
Months 1–3 — Records and experts. We collect the LAPD file via California Public Records Act request (Government Code § 7920.000 et seq.). We subpoena the property owner’s insurance, the promoter’s insurance, the platform’s insurance, and the security company’s insurance. We retain a forensic economist to build the worklife and household-services damages model. We retain a security expert to evaluate the foreseeability of criminal conduct at a 200-person party at a private residence. We retain a digital forensics firm to image phones, computers, and surveillance systems under chain of custody. We retain a reconstruction expert to map the driveway, the residence, and the shooting positions.
Months 3–9 — Depositions and expert exchange. We depose the property owner, the property manager, the platform’s trust-and-safety personnel, the promoter, the security company (if any), the LAPD officers who responded, the county public-health inspectors (if any), and the neighbor witnesses. The defense deposes the family, the other victims, and our experts. We exchange expert reports in compliance with California Code of Civil Procedure § 2034.210 et seq.
Months 9–18 — Dispositive motions and settlement. We file the motion for summary judgment (or oppose the defense’s), testing the legal sufficiency of each cause of action. We conduct mediation (Code of Civil Procedure § 1775 et seq.) once the defense has completed its discovery and the parties have enough information to evaluate the case. Most negligent-security and wrongful-death cases resolve at mediation. The case that does not resolve proceeds to trial, which in Los Angeles County typically runs 7 to 14 court days for a wrongful-death case of this complexity.
Trial. The trial in a Los Angeles County wrongful-death case is heard in the Stanley Mosk Courthouse (111 North Hill Street, Los Angeles), the main courthouse of the Los Angeles Superior Court. The jury is a Los Angeles jury, drawn from the same county where the mansion sat, the same streets where 200 people partied, the same 911 system that took five calls and did not stop the shooting. Trial is where the case either resolves mid-trial or the jury returns a verdict. Either way, the family’s voice is finally in the room.
Why The Family Needs A Trial Lawyer, Not A Settlement Shop
Premises-liability and negligent-security cases against well-funded defendants — property owners, promoters, platforms, and their insurance carriers — are not “settle and move on” cases. They are built, tried, and defended by experienced trial teams. The insurance carriers on the other side employ the best defense firms in California. The defense firms deploy the playbook above as a matter of course. The family that hires a lawyer who has never tried a premises-liability case to verdict is the family that gets a low-ball settlement and signs a release that ends the case forever.
Attorney911 is built for these cases. Ralph Manginello has spent 27+ years trying catastrophic-injury and wrongful-death cases in California and federal courtrooms. He is a former journalist who became a trial lawyer, a Texas-bar graduate with a federal-court admission, and a member of the Texas Trial Lawyers Association and the Houston Bar Association. He has built a record of multimillion-dollar recoveries for catastrophically injured clients, including a $5M+ brain-injury settlement, a $3.8M+ amputation settlement, a $2.5M+ commercial-truck-crash recovery, and a $2M+ maritime back-injury case. He is rated 8.2 / “Excellent” on Avvo and currently leads the $10M+ hazing lawsuit against Pi Kappa Phi and the University of Houston in Harris County. He was born in New York, raised in Houston’s Memorial neighborhood, graduated from UT Austin in journalism and public relations, and earned his J.D. from South Texas College of Law Houston in 1998. He has been licensed in Texas since 1998 and is admitted to the U.S. District Court for the Southern District of Texas.
Lupe Peña is the firm’s associate trial attorney and the architect of the day-to-day case strategy. He is a former insurance-defense attorney who spent years on the other side of these fights — inside the rooms where insurance carriers value claims, where adjusters set reserves, where defense counsel plans the playbook above. He is a third-generation Texan with roots to the King Ranch, born and raised in Sugar Land, fluent in Spanish, and conducts full client consultations in Spanish without an interpreter. He earned his J.D. from South Texas College of Law Houston in 2012, his B.B.A. in International Business from Saint Mary’s University in 2005, and has been licensed in Texas since 2012 with a federal-court admission. The advantage Lupe brings to the Beverly Crest case is the inside knowledge of what the carrier is going to do, in what order, and with what documents. We have lived that playbook. We know how to beat it.
The firm has recovered more than $50 million for injured clients across trucking, brain injury, amputation, maritime, refinery, and catastrophic-injury matters. We have a 4.9-star Google rating across 251+ reviews, a 24/7 live staff (not an answering service), and a same-day evidence-preservation protocol. Every consultation is free. Every case is contingency. We don’t get paid unless we win.
If Your Family Is Grieving A Loss From The Beverly Crest Mansion Party Shooting
You came to this page for a reason. Maybe the headline brought back a name and a face. Maybe a friend texted you a link. Maybe you have been carrying this since August 4, 2020, and you have only just started to think that someone — the property owner, the promoter, the platform — should be held responsible for what happened on that driveway.
We are Attorney911 — The Manginello Law Firm, PLLC. We are Texas-based trial lawyers with a national practice who have built and tried catastrophic-injury and wrongful-death cases in California and federal court. We are the people who send the preservation letter the day you call. We are the people who know what the insurance carrier is going to do and how to beat it. We are the people who treat a 35-year-old woman’s life as a 30-year worklife and a lifetime of household services and a lifetime of companionship, and we present that number to a Los Angeles jury with the receipts to back it up.
Ralph Manginello leads the trial team. He has 27+ years of courtroom experience, a federal-court admission, and a track record of multimillion-dollar recoveries in catastrophic-injury and wrongful-death cases. Lupe Peña runs the day-to-day strategy. He is a former insurance-defense attorney who knows what the carrier is going to do before the carrier does. Both of them are hands-on. Both of them are reachable. Both of them will know your family’s name and your family’s story.
The consultation is free. There is no fee unless we win. We do not get paid unless you do. Call us at 1-888-ATTY-911 or reach us at attorney911.com/contact. If you prefer, meet Ralph and meet Lupe before you call. Hablamos Español.
Past results depend on the facts of each case and do not guarantee future outcomes. This page is legal information, not legal advice. The information here is based on public reporting, California statutes and case law, and the firm’s experience in premises-liability and wrongful-death cases; it is not a substitute for the legal advice you would receive in a consultation with a licensed attorney based on the specific facts of your case.
If you or a loved one was injured or killed, the call is free and the representation is contingency. 1-888-ATTY-911. Contact Attorney911 today.