California Trampoline Park Injury Lawsuits: Waiver Rules, Liability & Compensation

Trampoline parks like Sky Zone, Big Air, Rockin' Jump, and Defy attract millions of visitors annually across California. While advertised as safe family entertainment, indoor jump parks present severe injury risks due to high-impact equipment, wall-to-wall matting, and interconnected jumping surfaces.

Every year, thousands of jumpers—primarily children and teenagers—suffer catastrophic injuries, ranging from compound fractures and growth plate damage to traumatic brain injuries (TBIs) and spinal cord trauma.

If you or your child sustained an injury at an indoor trampoline park, understanding California premises liability, equipment safety standards, and how liability waivers operate under state law is essential to securing financial recovery.

Quick Reference: California Trampoline Park Injury Claims

Feature	Legal Standard & Impact
Primary Legal Basis	Premises Liability (Cal. Civ. Code § 1714), Negligence, or Product Liability
Liability Waivers	Valid for Ordinary Negligence; Void & Unenforceable against Gross Negligence or Child Rights
Statute of Limitations	2 Years for adults (Cal. Civ. Proc. Code § 335.1); Tolled until Age 18 for minors
Fault Standard	Pure Comparative Fault — Victims recover compensation reduced by their percentage of fault
Potentially Liable Parties	Park owners, franchisors, staff/supervisors, equipment manufacturers, maintenance contractors

The Legal Reality of Trampoline Park Liability Waivers in California

Most trampoline parks require adult jumpers or parents of minors to sign digital liability waivers before entering. Park operators often claim these documents prevent injured guests from taking legal action. Under California law, this is a dangerous misconception.

Ordinary Negligence vs. Gross Negligence

While a properly drafted release form can waive claims for ordinary negligence (e.g., standard risks inherent in jumping sports), liability waivers cannot legally release a business from gross negligence, reckless misconduct, or intentional harm (City of Santa Barbara v. Superior Court).

Ordinary Negligence: Minor operational oversights or failure to exercise standard caution.
Gross Negligence: An extreme departure from the ordinary standard of care, such as ignoring visible equipment tears, operating known defective padding, knowingly failing to staff safety monitors, or violating ASTM International trampoline safety standards.

Special Protections for Minors

Under California law, parents cannot waive a minor child's legal right to sue for injuries caused by a third party's negligence.

Even if a parent signed a waiver on behalf of their child, courts routinely find clauses waiving the child's independent personal injury claims unenforceable.

Common Causes of Trampoline Park Accidents

Trampoline park injuries rarely stem from simple bad luck; they typically result from poor facility management or unsafe equipment design:

Double-Bouncing / Transfer of Kinetic Energy: When a heavier jumper lands near a lighter jumper, transferring massive energy that launches the smaller person unexpectedly.
Inadequate Court Supervision: Staff members (court monitors) failing to enforce safety rules, allowing overcrowding, or ignoring dangerous stunts and horseplay.
Defective Padding & Exposed Springs: Gaps between trampoline mats, thin perimeter padding, or missing spring covers that allow feet or limbs to drop through onto steel frames or concrete subfloors.
Torn Jump Mats & Anchor Failures: Deteriorated matting or broken support springs causing sudden collapse during impact.
Foam Pit Hazards: Shallow foam pits, degraded foam blocks that have lost impact absorption, or submerged hazardous objects beneath the pit surface.

Hypothetical Examples of Trampoline Park Claims

Gross Negligence Example: A park monitor notices a torn spring bed on a high-dodgeball court but leaves the area open to meet crowd demand. A teenager's foot catches in the tear, causing a compound tibia fracture. The waiver is void due to gross negligence.
Product Liability Example: A brand-new commercial trampoline mat suffers a structural seam failure during routine use due to defective stitching, dropping a jumper onto steel framing below. The equipment manufacturer is strictly liable.
Supervisory Failure Example: A court monitor is distracted by their smartphone while six teenagers jump simultaneously on a single mat designated for one person. A collision occurs, resulting in a severe concussion and cervical spine trauma.

Potentially Liable Parties in a California Claim

Depending on the cause of the incident, a personal injury claim may target multiple parties:

Park Owners & Franchisees: Responsible for day-to-day operations, staff hiring, safety rule enforcement, and facility maintenance.
Corporate Franchisors: Liable if mandatory franchise layout designs or standard operational guidelines create inherent safety hazards.
Equipment Manufacturers & Installers: Accountable under strict product liability if trampolines, safety netting, or impact padding feature design or manufacturing defects.
Third-Party Maintenance Contractors: Companies hired to inspect, service, or repair facility equipment that fail to address known hazards.

Types of Financial Compensation Available

Victims of trampoline park accidents can pursue compensatory damages for both economic and non-economic losses:

Medical Expenses: Coverage for emergency transportation, ER visits, surgical procedures, casting, physical therapy, and future corrective medical care.
Lost Income & Reduced Earning Capacity: Compensation for time missed from work during recovery or long-term loss of income potential due to permanent disability.
Growth Plate & Long-Term Pediatric Injuries: Specialized damages for child victims whose bone development or physical growth is altered by joint fractures.
Pain and Suffering: Compensation for physical pain, emotional distress, anxiety, PTSD, and loss of enjoyment of life.
Permanent Disfigurement & Disability: Financial recovery for permanent scarring, limb shortening, paralysis, or loss of mobility.

Frequently Asked Questions

Can I sue a trampoline park if I signed a waiver before entering?

Yes. Waivers do not protect parks against gross negligence, safety code violations, defective equipment, or injuries suffered by minor children whose legal rights cannot be waived by parental signatures under California law.

What is the statute of limitations for a trampoline park lawsuit in California?

For adults, the deadline is generally two years from the date of the injury (Cal. Civ. Proc. Code § 335.1). For injured minors, the two-year clock is tolled (paused) and does not begin running until the child turns 18 years old.

What should I do immediately after a trampoline park injury?

Report the injury to park management, demand a written incident report, take photos or videos of the scene (including equipment defects or lack of staffing), gather witness contacts, seek immediate emergency medical care, and do not sign post-accident releases.

Are trampoline parks regulated in California?

While indoor trampoline parks are subject to general premises liability laws and local building codes, many rely on voluntary industry guidelines set by ASTM International (such as ASTM F2970 for commercial trampoline courts). Violating these industry standards serves as strong evidence of negligence.

What is a "double-bounce" injury, and who is responsible?

A double-bounce occurs when two people jump on the same mat, causing energy from one jumper to unexpectedly launch the other. The park is responsible when staff fail to enforce single-jumper rules or allow improper court crowding.

What if the trampoline park claims the injury was my child's fault?

California uses a pure comparative fault standard. Even if a child or teenager broke a rule, the park remains financially responsible for its portion of liability if unsafe equipment or poor supervision contributed to the accident.

How much does it cost to hire a personal injury lawyer for a trampoline park claim?

Trampoline injury claims are handled on a contingency fee basis. You pay no upfront attorney fees or out-of-pocket litigation expenses; legal fees are only deducted if a financial recovery or settlement is successfully obtained.

Injury Justice Law Firm can help you. To schedule a consultation, call (818) 394-7835 or fill out the contact form.

Trampoline Park Injury