- Union City, CA
Serves this city
San Mateo County · California
Security companies in San Mateo, California
San Mateo sits in San Mateo County, California, with a 2020 census population of 105,661. 13 security companies in our directory record coverage for San Mateo, and every one of them is a manually reviewed listing. Each card states whether the company is based in the city or serves it from nearby.
13 providers cover San Mateo
Providers serving San Mateo
Each card shows whether the company is based in San Mateo, serves it from elsewhere, or covers all of California.
12 companies shown for San Mateo.
- San Jose, CA
Serves this city
Allied Universal employs thousands of professionals and operates in offices across the country.
- Burlingame, CA
Serves this city
- San Francisco, CA
Serves this city
Highly trained professionals equipped with the best technology
- Los Angeles, CA
Serves this city
- Oakland, CA
Serves this city
- San Jose, CA
Serves this city
- Santa Clara, CA
Serves this city
- Oakland, CA
Serves this city
- Santa Clara, CA
Serves this city
- San Francisco, CA
Serves this city
- San Jose, CA
Serves this city
Cities near San Mateo
- Security companies in South San Francisco8 mi
- Security companies in Redwood City9 mi
- Security companies in Daly City12 mi
- Security companies in Palo Alto13 mi
- Security companies in Alameda14 mi
- Security companies in Hayward14 mi
- Security companies in San Leandro14 mi
- Security companies in San Francisco15 mi
- Security companies in Oakland15 mi
- Security companies in Union City15 mi
- Security companies in Fremont18 mi
- Security companies in Mountain View18 mi
Other San Mateo County cities
Security services requested in San Mateo
Unarmed Security Guards in San Mateo
Uniformed guards for access control, patrol, and deterrence without firearms.
3 providers
Commercial & Business Security in San Mateo
Guard coverage for offices, warehouses, and commercial property.
12 providers
Bank & Financial Security in San Mateo
Guards trained for banks, credit unions, and cash-handling sites.
2 providers
Cannabis Dispensary Security in California
Licensed guards for dispensaries and cannabis transport.
K9 Security Services in San Mateo
Handler and detection dog teams for patrol and screening.
1 providers
Maritime & Yacht Security in San Mateo
Guards for marinas, vessels, and port-side property.
1 providers
Armed Security Guards in San Mateo
Licensed armed officers for higher-risk sites and asset protection.
3 providers
Mobile Patrol Services in California
Marked vehicle patrols and alarm response across multiple sites.
Event Security in San Mateo
Crowd management, access control, and safety staffing for events.
2 providers
Executive Protection in San Mateo
Close protection and secure transport for individuals and teams.
5 providers
Construction Site Security in California
Theft and vandalism prevention for active job sites and equipment yards.
Gated Community Security in California
Access control, gate staffing, and patrols for HOAs and gated neighborhoods.
Lobby & Front Desk Security in California
Concierge-style officers for building lobbies and reception areas.
Parking Lot & Garage Security in California
Patrols and monitoring for parking lots and structures.
Vacant Property Security in California
Protection for vacant buildings, lots, and construction-adjacent sites.
Retail Loss Prevention in California
Uniformed and plain-clothes staff focused on shrink reduction.
Fire Watch in California
Compliance patrols when fire systems are impaired or under repair.
Alarm & Video Monitoring in California
Remote monitoring of intrusion alarms and camera systems.
Residential Security in San Mateo
Gated community, HOA, and private residence security staffing.
4 providers
Hiring security in San Mateo: common questions
- Do security guards in San Mateo need a California licence?
- Yes. Guards working in San Mateo must hold a California guard registration, and the companies employing them must hold a Private Patrol Operator licence from the Bureau of Security and Investigative Services. Ask for both numbers before you sign anything.
- How do I check a San Mateo security company before hiring?
- Confirm the Private Patrol Operator number with BSIS, ask for a current certificate of insurance, and request references for sites of a similar size to yours.
- Which areas around San Mateo do these companies cover?
- Coverage is stored per city. Most providers listed here also cover other San Mateo County cities, and each card states whether the company is based in San Mateo or travels in to serve it.
- What does Security Explorer publish about San Mateo companies?
- We publish only listings that have passed manual review. We show a licence as checked only when we hold a dated record of that check, and featured placement is a paid position rather than a recommendation.
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