
Best Construction Security Guards in California




Our Clients






Protecting Your Construction Projects from Start to Finish
For over a decade, Construction Security Services has been a trusted provider of top-tier security solutions tailored to the construction industry. We specialize in offering armed guards, unarmed guards, and vehicle patrol services to ensure the safety of construction sites across California. Whether you’re managing a small project or a large-scale development, our highly trained security professionals are here to protect your assets and personnel. Serving major areas like Los Angeles, Orange County, Riverside, and San Diego, we provide 24/7 security tailored to meet your needs. Contact us today for a free consultation and ensure your site is safe and secure
Construction Security Company California
According to national data, approximately 1 billion dollars of construction theft occurs annually but only about 25% is recovered. Many construction locations are vulnerable to internal theft or outside intruders, it is imperative that proper safety precautions are set in place to not become another statistic. OnGuard offers construction security services for your project protection needs. We provide construction protective services for construction locations whether it is a single-family dwelling or multimillion-dollar development at very competitive rates. Our construction site security guards are trained to exercise extreme vigilance and are held accountable by utilizing visitor and vendor login sheets to record all access to the construction site. We provide site specific supervisors per construction project to ensure that our construction security guards are adhering to the client’s requirements.


Guard your construction site
with Construction Site Security Guard ServicesConstruction sites are the expensive work sector that are unfortunately very vulnerable to vehement issues. Whatever is being developed, there are expensive equipment, valuable data, and other notable costly possessions.
ON GUARD
OnGuard Construction Security Services?
Onguard Security proudly serves all of California, including Los Angeles, Orange County, San Diego, Sacramento, San Francisco, Ventura County, and more. We are the most affordable construction security guard company, matching and beating all prices. With over 20 years of experience and 600+ trained guards, we offer free officer consultations to ensure the best security for your needs. Trust Onguard for reliable, cost-effective protection.
Our Five Step Process
- Free Consultation & Risk Assessment
- Proposal with Competitive Quote
- Contract Finalized & Signed
- Customized Security Plan
- Security Services Start
What Differs Onguard Security?

Month to Month Security Agreements (No Locked in Contracts)

We are Affordable & Reliable

Field Supervisors

24/7 Customer Service Dispatch Available

Licensed, Insured, & Bonded

Onlive Guard Management App
(The Onlive App ensures accountability by allowing guards to scan QR codes during patrols, take timestamped photos with descriptions of their patrols, and clock in and out for start/end shift and for lunch—all in one streamlined platform.)
Service Areas
WHAT OUR CLIENTS SAYS
See what our clients have to say about their experience with Construction Security Services. Our commitment to safety, professionalism, and reliability speaks through their words
Best Security Guard Services in Los Angeles! I hired this Private Security Company to guard our construction site in Hollywood! Onguard has been servicing us for 6 months and their Security Services are Impeccable! The Security Guards are on time, well dressed and are always there to deter issues! I highly recommend hiring this Security Guard Company!

Michael Crespi
I hired OnGuard for my wedding and I spoke to their security expert Mark and he was able to provide me with security officers for the event , everything was as promised, Mark provided me with the most responsible and clean cut security officers for my event and the guards protected our guests and deterred all issues for the event

James Vasquez
Secure, professional and affordable! I used Onguard Security to protect my warehouse. They made me feel very comfortable and assured me that they would have 2 guys around the clock and they delivered. Their management team is a phone call away.

Monica Alvarez

WELL TRAINED SECURITY GUARDS
