Licensed security companies in California
5,248 currently licensed · 576 not current · read September 14, 2026
These are California Department of Consumer Affairs, Bureau of Security and Investigative Services (BSIS) records for the Private Patrol Operator (PPO), as we read them on September 14, 2026. tessura did not issue or approve any of them, and most of these companies have no account with us. A company missing from this list is not necessarily unlicensed — check the regulator directly.
Check any record at the California Department of Consumer Affairs, Bureau of Security and Investigative Services (BSIS) lookup →Also checking the guards themselves? What they should hold in California →5,248 records
D & D SECURITY
Private Patrol Operator 122465 · LOS ANGELES · read September 14, 2026
Licensed
D & F SECURITY
Alarm Company Operator 1983 · LOS ANGELES · read September 14, 2026
Licensed
D & H FIRE PROTECTION, INC.
Alarm Company Operator 8265 · SAN DIMAS · read September 14, 2026
Licensed
D & P SERVICES
Alarm Company Operator 6817 · ELK GROVE · read September 14, 2026
Licensed
D & R PROTECTION SYSTEMS
Alarm Company Operator 3942 · ONTARIO · read September 14, 2026
Licensed
D & S SECURITY INC.
Alarm Company Operator 7555 · MONTEREY PARK · read September 14, 2026
Licensed
D AFESH A LARM S YSTEMS
Alarm Company Operator 4344 · WOODLAND HILLS · read September 14, 2026
Licensed
D BRAXTON PROTECTION SERVICES
Proprietary Private Security Officer Employer 1444 · VACAVILLE · read September 14, 2026
Licensed
D C ELECTRONICS
Alarm Company Operator 1255 · RIVERSIDE · read September 14, 2026
Licensed
D C INSTALLATIONS
Alarm Company Operator 4524 · SANTA ANA · read September 14, 2026
Licensed
D H PACE COMPANY, INC, DBA D H PACE SYSTEMS INTEGRATION
Alarm Company Operator 6050 · OLATHE · read September 14, 2026
Licensed
D M SECURITY
Private Patrol Operator 17768 · LA MIRADA · read September 14, 2026
Licensed
D S R SECURITY
Private Patrol Operator 16359 · KELSEYVILLE · read September 14, 2026
Licensed
D-5 SECURITY SERVICES
Private Patrol Operator 17337 · LATHROP · read September 14, 2026
Licensed
D.A. EXECUTIVE SERVICES AND SECURITY INC.
Private Patrol Operator 119705 · LODI · read September 14, 2026
Licensed
D.A.D. PROTECTION SERVICES
Private Patrol Operator 122601 · OXNARD · read September 14, 2026
Licensed
D.G.K.C. INC.
Proprietary Private Security Officer Employer 1225 · NAPA · read September 14, 2026
Licensed
D&E A/V
Alarm Company Operator 7872 · SAN JOSE · read September 14, 2026
Licensed
DAGDA INTERNATIONAL INC
Private Patrol Operator 122642 · MOORESVILLE · read September 14, 2026
Licensed
DAMEWOOD SECURITY & SOUND
Alarm Company Operator 6792 · CAMARILLO · read September 14, 2026
Licensed
DAMIAN EXECUTIVE PROTECTION INC.
Private Patrol Operator 120306 · LOS ANGELES · read September 14, 2026
Licensed
DARK HORSE SERVICES
Private Patrol Operator 121530 · NEWHALL · read September 14, 2026
Licensed
DASH LOW VOLTAGE, INC
Alarm Company Operator 8239 · FULLERTON · read September 14, 2026
Licensed
DATA TECH SECURITY
Alarm Company Operator 2091 · FOLSOM · read September 14, 2026
Licensed
DATAWATCH SYSTEMS, INC.
Alarm Company Operator 7696 · BETHESDA · read September 14, 2026
Licensed
DAVE BOFFI INVESTIGATIONS
Private Patrol Operator 121789 · PENNGROVE · read September 14, 2026
Licensed
DAVE HOLLAND SERVICES
Alarm Company Operator 4637 · COSTA MESA · read September 14, 2026
Licensed
DAVEY PROTECTION SOLUTIONS
Private Patrol Operator 120745 · ROSEVILLE · read September 14, 2026
Licensed
DAVID SHIELD SECURITY, INC.
Private Patrol Operator 119684 · CALABASAS · read September 14, 2026
Licensed
DAVIS AGUAYO GROUP
Private Patrol Operator 122449 · MISSION VIEJO · read September 14, 2026
Licensed
DAW SECURITY
Private Patrol Operator 11088 · SANDY · read September 14, 2026
Licensed
DAWA HOLDINGS LLC
Proprietary Private Security Officer Employer 1259 · ARCATA · read September 14, 2026
Licensed
DAY 1 SERVICES INC
Alarm Company Operator 6385 · LAGUNA HILLS · read September 14, 2026
Licensed
DB (DIAMOND BAR) PROTECTION SERVICE
Private Patrol Operator 122317 · DIAMOND BAR · read September 14, 2026
Licensed
DB INTEGRATION
Alarm Company Operator 6013 · CAMERON PARK · read September 14, 2026
Licensed
DBA ALARM & SECURITY, INC.
Alarm Company Operator 6706 · SALINAS · read September 14, 2026
Licensed
DBC PROTECTIVE SERVICES
Private Patrol Operator 120363 · MONTCLAIR · read September 14, 2026
Licensed
DBM SECURITY GROUP, INC.
Private Patrol Operator 120169 · NORTH HILLS · read September 14, 2026
Licensed
DC SECURITY
Alarm Company Operator 5400 · SAN FRANCISCO · read September 14, 2026
Licensed
DDCUES LLC
Proprietary Private Security Officer Employer 1392 · WEST POINT · read September 14, 2026
Licensed
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