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Security guard companies in Diamond Bar, CA

8 security and alarm companies in Diamond Bar offering security guard companies. California private patrol operators and Illinois private security contractor agencies: companies licensed to furnish security officers and patrols.

Featured spots · Diamond Bar, CA

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Reach Businesses, HOAs, property managers and homeowners in California and Illinois checking a security guard or alarm company before they sign searching in Diamond Bar, CA. Labelled placement above the list, your description and website, and messages sent straight to you.

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All 8

Secure Group1142 S Diamond Bar Blvd Ste 900 · Diamond Bar, CA 91765 · Security guard companiesPrivate patrol operator · licensed since 1995California-licensedSecurity guards
American Protective ServiceDiamond Bar, CA 91765 · Security guard companiesPrivate patrol operator · licensed since 1999California-licensedSecurity guards
Starside Security & Invstgtn, Inc.1370 Valley Vista Dr Ste 214 · Diamond Bar, CA 91765 · Security guard companiesPrivate patrol operator · licensed since 2000California-licensedSecurity guards
Ronin Security Group23535 Palomino Dr # 222 · Diamond Bar, CA 91765 · Security guard companiesPrivate patrol operator · licensed since 2002California-licensedSecurity guards
Proliant Services Inc.1370 Valley Vista Dr Ste 200 · Diamond Bar, CA 91765 · Security guard companiesPrivate patrol operator · licensed since 2017California-licensedSecurity guards
Dsi Security Services3333 S Brea Canyon Rd Ste 105 · Diamond Bar, CA 91765 · Security guard companiesPrivate patrol operator branch office · licensed since 2019California-licensedSecurity guardsBranch office
Our Father's Security324 S Diamond Bar Blvd # 107 · Diamond Bar, CA 91765 · Security guard companiesPrivate patrol operator · licensed since 2025California-licensedSecurity guards
Ipc Security Service24046 Highcrest Dr · Diamond Bar, CA 91765 · Security guard companiesPrivate patrol operator · licensed since 2026California-licensedSecurity guards