California Service Areas
Diligent Security Services supports commercial clients across California with security guards, mobile patrol, and event security. Our primary coverage focuses on the Inland Empire and surrounding cities.
Core Services in Every City
Colton, CA
San Bernardino County
- •Commercial security
- •Mobile patrol
- •Event security
San Bernardino, CA
San Bernardino County
- •Security guards
- •Warehouse protection
- •After-hours patrol
Riverside, CA
Riverside County
- •Commercial security
- •Access control staffing
- •Event security
Ontario, CA
San Bernardino County
- •Logistics facility security
- •Patrol services
- •Loss prevention
Fontana, CA
San Bernardino County
- •Industrial site security
- •Mobile patrol
- •Gate staffing
Moreno Valley, CA
Riverside County
- •Commercial security
- •Distribution center coverage
- •Patrol services
Rancho Cucamonga, CA
San Bernardino County
- •Retail security
- •Event staffing
- •Mobile patrol
Redlands, CA
San Bernardino County
- •Commercial security
- •Campus patrol
- •Emergency response
Local Credentials & Coverage Standards
Our teams follow California BSIS guidelines, maintain detailed incident reporting, and provide on-site supervision for commercial accounts. Every assignment includes clear escalation protocols and a dedicated account manager.
California BSIS compliant personnel
24/7 dispatch + rapid response coordination
Detailed shift logs and post-incident reports
Need security coverage outside these cities?
We expand coverage based on contract scope. Tell us about your location and requirements.