Licensed Security Guard Company Serving Simi Valley

Guardian National Security has provided premier security guard services to Simi Valley and surrounding cities since 1997. In order to meet the specific needs and circumstances of each of our clients, we start by providing a comprehensive security evaluation. This evaluation gives us a complete understanding of each client’s security goals and their unique set of threats and vulnerabilities. Additionally, we get a clear picture of any specific concerns and budget constraints. With this information, we are able to create a custom security plan that is both effective and affordable.

60+ Years of

Simi Valley's Best Choice for Professional Security Guards

All of our competitively-priced security guard services are safe, reliable and effective. They are also fully customizable to meet the needs of any business. If your business in Simi Valley, Moorpark, Fillmore, or other nearby city wishes to take advantage of high-quality security services at the best rates in Ventura County, call Guardian National Security today. We provide complimentary consultations and will match or beat any competitor’s quote.

Our most popular services include:

Professional &

Security Guard Services


We specialize in developing security strategies that effectively reduce theft, vandalism, trespassing, employee pilferage, and other criminal activity in retail stores, malls, and shopping centers. »


Whether you need nightly lock-up and alarm services, parking lot patrol, or temporary fire watch services, we have the skills and expertise to provide a cost-effective security solution to meet your priorities. »


Our highly trained and licensed guards can be trusted to keep valuable machinery and equipment secure or to protect against vandalism, graffiti, trespassing, and other unwanted activity. »


Guardian National Security is thoroughly prepared to provide a wide range of transportation and logistical security duties for your trucking company, loading dock, or rail yard. »


We’re proud to provide unparalleled security guard services for homeowner associations, gated communities, apartment complexes, condominiums, and communities of all sizes.


Our Process

At Guardian National Security, we are committed to providing individually-tailored security plans to every customer at an affordable cost. In order to best serve the unique needs of our clients, we have developed an efficient multi-step process for designing, implementing, and monitoring custom security plans.

Free Consultation


We will thoroughly discuss your security needs and concerns in order to understand your property.

Proposal & Quotes


We guarantee to match or beat any competitor’s quote for the same services.

On-Site Follow Up


One of our security advisors will complete a thorough on-site walk-through at your location.

Customized Security & Patrol Plans


We will delineate patrol routes, schedules & post orders based on your specific needs.

Guards to Arrive On-Time, In Uniform & Ready to Work


You can expect your assigned guards to arrive on-time, in uniform, and ready to work.

Daily Activity Reports, Incident Reports & Parking Violation Warnings


We provide clients with daily activity reports, incident reports, and parking violation warnings.

Protecting California's Most Recognized Brands

Brookstone Logo Burger King Logo Kohl’s Logo Southern California Edison (SCE) Logo Starbucks Coffee Logo Bank Of America Logo


Guardian National Security

Trained, BSIS-Licensed Security Guards


Expertly-Trained, BSIS-Licensed Security Guards

Superior Customer Care


Exceptional Customer Service Available 24/7

Competitive Pricing


We Match or Beat Any Competitor’s Quote

Highly Trained Security Guards for Simi Valley

  • Collectively, our management team has over 60 years of industry experience.
  • Our guards are thoroughly screened before they are hired and receive training that more than meets the Bureau of Security and Investigative Services’ certification requirements.
  • Our guards are all licensed, bonded and insured.
  • Our guards receive initial and ongoing training from industry experts in a wide variety of security topics, including:
    • power to arrest
    • terrorism awareness
    • public relations
    • observation and documentation
    • communication
    • post orders and assignments
    • evacuation procedures
    • criminal laws
    • trespass
    • liability and legal aspects
    • access control
    • workplace violence
    • parking/traffic control
    • CPR and first aid
    • handling difficult people
    • preserving the incident scene
  • Our guards are closely monitored by management staff through regular on-site visits, electronic time clock systems, Detex GPS, and client feedback forms.
  • We create customized, comprehensive security plans for every Simi Valley, Moorpark, and Fillmore client.
  • We offer our security services on short-term and long-term bases.
  • We have the capabilities and resources to provide dedicated and reliable security services anywhere in Southern California.
  • We are readily available 24 hours a day, 365 days a year.

Guardian National Security Offers the Best Value in the Following Security Services. . .

Mobile Guard Patrols in Simi Valley

One of the most cost-effective ways to improve safety and security at a business is to have uniformed security guards routinely patrol your building or property. At Guardian National Security, one of our most frequently requested services is our mobile patrol service. This service features exceptionally trained guards who tour a site either on foot, by bike, on a golf cart or in a marked patrol vehicle. Our guards follow patrol routes designed by our security experts and verify their tours using a state-of-the-art time clock system. If they are notified of or come across an incident, they will be able to respond immediately and/or contact local authorities with the help of our 24-hour dispatch. Guards will maintain a daily log and compile incident reports for the client’s records. Additionally, we can install wireless motion detectors at no additional cost and pinpoint guard locations at any time using Detex GPS. Call today to obtain a free quote for security mobile patrols in Simi Valley, Moorpark, and Fillmore.

Standing Security Guards in Simi Valley, Moorpark, Fillmore

Our standing security guard services are ideal for Simi Valley, Moorpark, and Fillmore companies that wish to discourage loitering, theft, vandalism, and other unwanted behaviors. This service is performed by BSIS licensed guards who have the experience, training and expertise to effectively reduce crime while elevating the customer’s perceived level of safety and security. Our guards always arrive on time and ready to work. They adopt one of four guard appearances: standard, casual, professional, or construction. Throughout their assignment, our guards will be supported by our 24-hour local dispatch service and be readily reached by the client as well as our management team.

Logistical Security in Simi Valley, CA

Our logistical security services provide Simi Valley, Moorpark, and Fillmore companies with reliable guard services that serve two functions: effective protection of their personnel and assets and reliable assistance with logistical tasks. Our guards can work on your site on an as-needed or ongoing basis and be instructed to perform a wide variety of duties, from dock designations and timekeeping to inventory management to truck inspections. They can even assist with OSHA audit fulfillment requirements. This value-added security service is ideal for maritime companies, rail yards, trucking companies, delivery firms, and manufacturing facilities in and around Simi Valley, Moorpark, and Fillmore.

Alarm Response with Vehicle Patrol Available 24 Hours a Day

If you have a security alarm system installed at your Simi Valley business, it is best to have a licensed and local security firm, such as Guardian National Security, monitor your alarms and respond to them if they are ever triggered. Doing so ensures that you’ll have a qualified security guard arrive in a marked patrol ready to respond and investigate any alarms and determine if the police need to be called. This provides you with an incredible peace of mind and saves you the costs that can be incurred when the police respond to false alarms. Call us today for a free quote. We offer exceptional, 24-hour alarm response services in Simi Valley, Moorpark, and Fillmore at a great price.

Wireless Security Equipment Rentals & Installation

In addition to 24-hour alarm response services available, Guardian National Security is also qualified to rent and install security alarm equipment in Simi Valley, Moorpark, and Fillmore. We offer a variety of low voltage security systems such as video cameras, motion sensors, and CCTV security alarms. Because we are a licensed C7 contractor and an experienced security firm, we will not only properly install your surveillance equipment but also determine its best placement for maximum effectiveness. Security equipment rentals are available on a short-term or long-term basis, and can be monitored remotely by our central office. All rentals and installations come packaged with one of our highly trained standing security guards. Call today for a free quote.

Code-Compliant Fire Watch Services Available in Simi Valley, Moorpark, and Fillmore, CA

Our fire watch services are often requested by Simi Valley, Moorpark, and Fillmore companies when they are subject to California’s Fire Code’s fire watch requirements but don’t have the staff to meet them. A fire watch is required when a portion of or all of a building’s necessary fire alarms and sprinklers are out of service. The designated fire watch personnel is required to be familiar with the areas they are watching, systematically patrol all vulnerable areas and watch for signs of fire, document all patrol rounds, and call the fire department and start evacuation procedures if a fire is detected. The assigned fire watch personnel must also be supplied with cell phones and two-way radios. Guardian National Security’s fire watch guards are trained, experienced, and equipped to more than meet all of these expectations and can be trusted to stay solely focused on the job at hand. Call today to learn more or to schedule fire watch at your Simi Valley, Moorpark, or Fillmore site.

What our

Clients Have to Say

Guardian National Security is committed to providing reliable, quality protection services to a variety of industries through custom-designed security strategies, expertly trained security guards, and excellent customer service.

Guardian National Security Services gave me so much peace of mind. They were able to secure my office building efficiently and professionally.

SAL A. Via Google

We meet or Beat Any competitor's quote

Call Today to Get Started with Security Guards, Patrol Services & More

Guardian National Security is a fully licensed security guard company with countless numbers of satisfied clients and an A+ rating from the Better Business Bureau. We are also bonded and insured. We not only exceed the state’s insurance requirements for liability, workers comp and commercial auto liability, but can also increase our limits to meet the needs of any commercial client in the Simi Valley, Moorpark, and Fillmore area. If you are interested in one or a combination of our security services, contact us today for a fast, free quote. You can either call us at (866) 784-3176, or you can complete our quick quote form, available here.

Custom-Made, Personalized Security Plan

Guardian National Security | Simi Valley, Moorpark, and Fillmore, California
Zip Codes: 93015, 93016, 93021, 93062, 93063, 93094, 93099
Area code: (805, 820)