The best 10 Security Guard Companies near Windsor, California - with verified email and phone number owner contact info

Protect your business with Capstone Security. Hire private security, emergency services, corporate investigations, and more in Northern California. Get a free quote today!

American Veteran Security offers licensed, FBI‑screened guards for residential, commercial, government, winery, school, event, clinic, bodyguard, firewatch, and construction site protection across Sonoma County. Founder Mike Arieta, a 13‑year Army/Marine veteran and former Military Police officer, leads a disciplined team emphasizing veteran expertise and local service, reliable, responsive, professional, community‑focused.

Armorous Security provides guard and patrol services Northern California, covering Napa, Sonoma, Bay Area, Alameda, Marin, Sacramento, Mendocino and Lake counties. Offerings include armed/unarmed guards, vehicle patrols, emergency response and deterrent systems for commercial, construction, cannabis, HOA, winery and hospitality sites. Recognized in awards; feedback notes guard selection and communication.

Armorous Security provides guard and patrol services Northern California, covering Napa, Sonoma, Bay Area, Alameda, Marin, Sacramento, Mendocino and Lake counties. Offerings include armed/unarmed guards, vehicle patrols, emergency response and deterrent systems for commercial, construction, cannabis, HOA, winery and hospitality sites. Recognized in awards; feedback notes guard selection and communication.

First Defense Protection Services provides security solutions focused on prevention and rapid response. Offerings include patrol, lockup, tenant lockout, alarm and incident response, report writing, foot patrols, welfare checks, and proactive security checks. The team adapts patrol schedules, monitors local crime trends, and equips guards with updated tools for clients.

JMA Security Services, a licensed private security firm operating in Santa Rosa and Sonoma County since 2012, offers insured guard patrols, mobile vehicle patrols, event security, fire‑watch, and specialized protection for commercial, construction, healthcare, government, school and winery sites. Customer feedback averages 4.9 stars from eleven reviews overall satisfaction rating.

SOCO Private Security, a veteran‑owned firm, provides fixed‑site, vehicle‑patrol, executive protection, civil standby, asset protection, fire watch, parking enforcement, loss prevention, and prisoner transport services. Clients include shopping centers, schools, banks, hotels, wineries, and hospitals. The company uses SmartPatrol vehicles with cameras and body‑cams, and participates in local community groups.

High Rock Security, operating since 2002, delivers event and facility protection across the western U.S. Services include crowd‑focused event staffing, ongoing site patrols, access control, CCTV monitoring, investigations, fire watch, and emergency response. Clients feature major festivals and universities, with a focus on compassionate interaction, risk intelligence, and cross‑trained expertise.

Mendoza Private Security offers armed and unarmed guards, mobile patrols with randomized routes, event crowd management, discreet executive protection, and secure transport for valuables. Serving Northern California, they emphasize shift reporting, flexible coverage from single events to contracts, and an experienced team backed by a client portal and training resources.