MT Security & Investigations — Security Guards & Private Investigators in San Diego County

Who is MT Security & Investigations?

MT Security & Investigations is a San Diego County security guard company and licensed private investigation firm at 123 Worthington St #201, Spring Valley, CA 91977. It provides armed and unarmed guards, HOA and community patrol, foreclosed and vacant property security, construction and event security, and private investigations. California BSIS licenses PPO 14929 and PI 23720. Call (619) 765-2222, staffed 24/7.

MT Security & Investigations was founded in 2002 by Michael T., who served 15 years as a patrol officer and investigator with the Chula Vista Police Department. The company protects HOAs, vacant and bank-owned properties, construction sites, churches, schools and events throughout San Diego County, and runs a licensed private investigation practice for surveillance, background checks and workers' compensation cases. The company says its emergency line is staffed around the clock, that it can dispatch guards the same day, and that typical on-site response is 15–30 minutes.

MT Security & Investigations at a glance

Services offered by MT Security & Investigations

• Armed Security Guards

  Licensed armed officers for banks, high-risk commercial properties, construction sites and events that need a stronger deterrent.

• Unarmed Security Guards

  Uniformed, BSIS-licensed guards for access control, lobbies, retail, apartments and short-term or ongoing posts.

• HOA & Community Patrol

  Scheduled patrols, access control and written incident reports for HOAs and apartment communities, with reporting boards can review.

• Foreclosed & Vacant Property Security

  24/7 coverage, daily photo reports and fast squatter response for banks, lenders, REITs and out-of-state owners.

• Construction Site Security

  Overnight guards and mobile patrol to stop copper, tool, fuel and equipment theft on active job sites.

• Event Security

  Professional, low-key event security for weddings, church and school events and private functions — including short-notice bookings.

• Church & School Security

  Threat assessment, visible deterrence and trained officers for churches, schools and other sensitive community spaces.

• Post-Fire & Disaster Security

  Guards deployed within hours of a wildfire or disaster to prevent looting and protect evacuated homes and businesses.

• Private Investigations

  Surveillance, background checks, workers' compensation fraud, internal theft, infidelity and missing-person investigations, with reports prepared to court standards.

How to get a fast, accurate security quote from MT Security

Have these details ready when you call (619) 765-2222 or email — it saves a site visit or a second call:

• The property address or event location, and the type of site (HOA, vacant home, construction, church, event).
• Armed or unarmed — or ask which fits your risk level.
• Start date, hours per day and how long you need coverage.
• Any recent incidents: break-ins, squatters, theft, vandalism or threats.
• For investigations: what you need to find out and any deadlines (court dates, claims).

Hours & location

Where does MT Security & Investigations work?

Based in Spring Valley, MT Security & Investigations serves spring Valley and all of San Diego County — South Bay, East County, the City of San Diego and North County. Towns with a Great Local Pros page are linked.

What customers say about MT Security & Investigations

Read recent customer reviews of MT Security & Investigations where they were posted:

Testimonials published by MT Security & Investigations

• “We hired MT Security after our old company kept missing patrols. The difference is night and day. We get written reports we actually read.”— J. Martinez, HOA Board President, Chula Vista

• “We had a copper theft problem at our construction site. After we hired MT, it stopped completely.”— R. Hernandez, Construction Project Manager, El Cajon

• “We needed a PI for a workers' comp case. MT got us the video evidence in two weeks.”— L. Chen, Insurance Adjuster, San Diego

Frequently asked questions about MT Security & Investigations

Before you hire a security company in California

California requires security companies to hold a Private Patrol Operator (PPO) license from the Bureau of Security and Investigative Services (BSIS); every guard must hold a BSIS guard card, armed guards also need an exposed firearms permit, and private investigators need a BSIS PI license. Look up any license with the California DCA License Search, ask for proof of insurance, and get post orders and pricing in writing.