Security Guard Services in Altadena from Guardian National Security is available for all of your private security needs in the San Gabriel Valley. We offer highly reliable security guard services in San Marino, Altadena, Sierra Madre, Pasadena and surrounding areas, at very competitive prices, and customize our security solutions to meet each client’s unique needs, from crowd control and access management to loss prevention. We offer trustworthy security guards, 24-hour availability, innovative practices and cutting-edge technology, making us one of the best providers of private security services in the greater Los Angeles area.

At Guardian National Security, we are dedicated to our customers’ safety and have experience working at businesses, shopping centers, schools, gated communities, hotels, manufacturing facilities, recreational areas, museums, and many other residential, commercial and industrial locations throughout Altadena, San Marino, Sierra Madre, and the surrounding area.
Count on Guardian National Security for any of the following security services:
Effective, Professional & Affordable
Our services include mobile vehicle patrol, foot patrol, bike patrol, private parking enforcement, retail security, logistics, and standing guards.

In addition, 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 patrols, or temporary fire watch coverage, we also have the skills and expertise to deliver a cost-effective security solution that meets your priorities.»

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

Guardian National Security is fully 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 neighborhoods of all sizes.



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

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

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

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

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

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

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

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

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

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

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

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

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







Expertly-Trained, BSIS-Licensed Security Guards

Exceptional Customer Service Available

We Match or Beat Any Competitor’s Quote
Even the best of communities are not immune to crime. Crime statistics for Altadena and surrounding areas show that planned crimes as well as crimes of opportunity are still a concern. In fact, a recent study showed that there were close to 40 violent crimes and almost 200 property crimes in Altadena over a six-month period. To help you combat this, our security guard and patrol services can be customized to effectively discourage criminals (such as shoplifters, vandals, robbers and burglars), control property access, protect guests at private events, ensure faster response in emergencies (such as fires) and more. Call us today and you will receive a customized security program that meets your goals, circumstances and budget in Altadena.
Hiring a licensed private security/patrol agency to protect your Sierra Madre business or community is a smart investment. That’s because a dedicated and well-trained security guard can monitor your Sierra Madre property for suspicious or out-of-the-ordinary activity, provide immediate response to activated alarms and deter criminals (especially those who prey on communities with low crimes rates and lax security procedures). Call us today to learn more.
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
Call today and we’ll set up a time for you to receive a free, on-site estimate. We welcome requests for one-time, long-term, and short-term security guards, and work with clients to customize our guards’ appearance, duties, weapons (if any), and communication tools, such as two-way radios and cell phones. All client information is kept private and confidential and our guards are tracked using a GPS enabled app system.
Guardian National Security is a state licensed C7 contractor and a member of California Association of Licensed Security Agencies, Guards and Associates (CALSAGA). Our guards are all licensed by the California Bureau of Security and Investigative Services (BSIS).

Guardian National Security | San Marino, Altadena, & Sierra Madre, California
Zip Codes: 91001, 91003, 91024, 91025, 91104, 91108, 91118
Area code: (626)