National Union Security Service
Professional Security Guard & Patrol Services in California
NUSS — Your Security Is Our Top Priority
Your safety is our priority — and your peace of mind is our promise.
Licensed Security Solutions Across California
Southern California
Serving communities and businesses across LA, OC, Riverside, San Diego, and San Bernardino.
Northern California
Providing professional protection and private patrol services across the Bay Area, Sacramento, and Fresno.
Your Trusted Partner in Professional Security Services
National Union Security Service prides itself on delivering exceptional security services tailored to meet the unique needs of businesses across California. With years of experience and a commitment to excellence, we ensure the safety and security of your assets, employees, and premises.
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Professional Security Officer (Unarmed)
(Unarmed) provide an effective, visible security presence to ensure the safety and security of your property.
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Event Security Guard
Ensuring safety and peace of mind. Hosting an event requires careful planning, and security is one of the most crucial aspects.
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Firewatch Security Guard
A fire watch security guard is a specialized professional dedicated to protecting properties at high risk of fire.
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Construction Site Security Guard
Safeguarding your site, day and night. NUSS provides robust, professional security solutions tailored for construction sites.
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Patrol Services Division
Vehicle Patrol Security Guards visit multiple areas to ensure safe & secure surroundings.
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HOA Gates Security Guard
Your HOA has rules that govern conduct in the community — our officers help enforce them professionally.
Expanded Security Coverage
Security Guard and Patrol Services for High-Risk Sites
From warehouses and access-controlled properties to corporate offices, our licensed officers protect assets, employees, visitors, and operations with site-specific procedures.
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Warehouse Security Guard Services
Inventory protection, entry screening, truck gate control, and after-hours patrols.
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Access Control Management
Visitor logs, credential checks, vendor verification, and restricted-area monitoring.
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Corporate Security Guard Services
Professional lobby presence, employee escort, parking oversight, and incident reporting.
Event protection
Event Security Guard
Professional event security officers help keep guests, staff, vendors, and VIP areas protected while your event runs smoothly.
- Emergency Response and Coordination: Trained guards stay ready to respond quickly and coordinate with venue teams or local authorities.
- Access Control: Entry points, guest lists, credentials, and restricted areas are monitored with a visible professional presence.
- Crowd Control: Officers manage movement, queues, and high-traffic areas to reduce risk and prevent disruption.
- Peace of Mind: From private parties to concerts and corporate events, our team supports a safe guest experience.
Security Guard and Patrol Services
Reach Us
- Email: sales@nationalunionsecurityservice.com
- Email: info@nationalunionsecurityservice.com
- Email: dispatch@nationalunionsecurityservice.com
- Dispatch Available : 24 / 7
- (818) 669-7957
- Emergency Dispatch: (818) 669-7957
NATIONAL UNION SECURITY SERVICE
Licensed & Insured · California PPO
HEAD OFFICE ADDRESS :
Serving All of California · Los Angeles · Orange County · San Diego · Sacramento · San Francisco
Locations
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California
Los Angeles
See Business License → -
California
San Diego
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California
Sacramento
See Business License → -
California
San Francisco
See Business License →
Premier Security Services in CA & TX
Service Areas – California & Texas Security Coverage
Houston, TX
View Security Guards in HoustonDallas, TX
View Security Guards in DallasFort Worth, TX
View Security Guards in Fort WorthSacramento, CA
View Security Guards in SacramentoLos Angeles, CA
View Security Guards in Los AngelesTurlock, CA
View Security Guards in TurlockStockton, CA (HQ)
Headquarters – Stockton Security ServicesIrvine, CA
View Security Guards in IrvineAustin, TX
View Security Guards in Austin
Let’s Numbers Talk
- 14+
- Years in Business
- 550+
- Happy Customers
- 140
- Licensed Officers
- 24/7
- Dispatch & Support
Our Security Workflow
A Proven, Four-Step Process to Protect Your Property
From the first site visit to long-term coverage, every step is documented, supervised, and reported back to you — so your security program runs without surprises.
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Initial Consultation
We walk your site, review existing risks, and identify the coverage and access points that need a uniformed presence.
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Customized Security Plan
You receive a written plan with post orders, schedules, and officer profiles — built around your hours, risks, and budget.
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Implementation & Training
Vetted, BSIS-licensed officers are deployed in full uniform with site-specific training, supervisor briefings, and equipment ready on day one.
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Continuous Monitoring
24/7 dispatch, GPS-tracked patrols, daily activity reports, and supervisor audits keep your coverage accountable and improving.
Trusted by Businesses Across California
Client Testimonials
Trusted by Property Managers, Builders & Event Organizers
Real feedback from California businesses that rely on our licensed security officers and patrol teams every day.
In the Field
NUSS Officers on Duty
A look at our licensed officers, patrol vehicles and dispatch operations across California and Texas.
Industries We Serve
Security Coverage for High-Risk, High-Traffic Properties
NUSS protects the facilities, job sites, communities and events that need visible deterrence, disciplined access control and reliable reporting.
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Hospital Security
Patient-first officers protecting healthcare facilities, ERs, and clinics 24/7.
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Construction Security
Safeguarding equipment, materials, and crews on active jobsites.
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Commercial Security
Front-desk, lobby, and after-hours coverage for offices and retail.
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Warehouse & Industrial
Loss-prevention and access control for distribution centers and plants.
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Residential & HOA
Gate officers and patrols for communities, condos, and HOAs.
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Events & Venues
Crowd control, access screening, and VIP protection for any event size.
Get Security Coverage Today
Need Licensed Security Officers On Site?
(818) 669-7957Call NUSS for a free estimate and fast deployment of trained guards, marked patrol vehicles, fire watch teams and event security across California.