Many negligent security disputes start with a familiar defense theme: the incident was “unexpected.” But in a suburban community like Hillsborough, “unexpected” doesn’t automatically mean “unforeseeable.”
What matters is whether the property had warning signs that a reasonable operator would recognize—such as:
- Prior incidents or police calls near the property
- Complaints about lighting, access doors, or unsafe entry points
- Broken or bypassed access controls (gates, keypads, garage entry)
- Security cameras that were missing, not maintained, or not positioned to capture relevant areas
- Staffing patterns that leave common areas unsupervised at predictable times
Even if the attacker acted independently, California law focuses on whether the owner’s security measures were reasonable for the risks they knew or should have known.


