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The 10 Best Security Companies in San Diego (2026)
San Diego is a large, varied city with distinct commercial districts, residential neighborhoods and frequent public events — all of which create steady demand for professional security services. This list ranks the top local security companies using Google review data, applying a Bayesian-style weighting so average ratings are balanced by review volume. It was updated for 2026 to reflect the latest available Google scores and counts. Use it as a starting point to compare firms by reputation; follow up with direct calls and interviews to confirm licensing, coverage and fit for your specific needs.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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B.A.M. Security Group Inc
B.A.M. Security Group Inc earns our top spot by combining a flawless 5.0 Google rating with the largest review volume on the list (56 reviews), which gives it the strongest weighted score. It is listed as a Security guard service with an address in San Diego, and that mix of perfect rating plus review depth is what places it above competitors. For reputation-based shortlists, that balance of quality and experience as reflected in reviews is often the most reliable single indicator.
The full ranking
I Guard Security Services
I Guard Security Services is rated 5.0 on Google with 33 reviews and appears as a Security guard service at 8996 Miramar Rd STE303 in San Diego.
33 reviews
Solace Security Services, Inc.
Solace Security Services, Inc. carries a 5.0 Google score based on 22 reviews and is categorized as a Security guard service with an address at 1252 Broadway G in El Cajon.
22 reviews
United Guard Services, Inc.
United Guard Services, Inc. posts a 4.9 rating from 34 Google reviews; the listing identifies it as a Security guard service located at 450 Fletcher Pkwy Ste 223 in El Cajon.
34 reviews
Roman security
Roman security has a perfect 5.0 Google rating across 17 reviews and is shown under Security guard service at 1761 Hotel Cir S Ste 114 in San Diego.
17 reviews
CAT III Security
CAT III Security appears as a Security guard service with a 5.0 rating from 14 reviews and an address of 2801 Camino del Rio S Ste 206-1 in San Diego.
14 reviews
Safeguard On Demand Security Services
Safeguard On Demand Security Services is listed as a Security guard service with a 5.0 Google rating based on 11 reviews and an address at 501 W Broadway Ste 800 in San Diego.
11 reviews
Peregrine Security Service
Peregrine Security Service holds a 5.0 rating from 11 Google reviews and is categorized as a Security guard service at 1651 E Main St #215 in El Cajon.
11 reviews
Professional Security Guard Inc California
Professional Security Guard Inc California carries a 5.0 Google score with 11 reviews and is listed as a Security guard service at 457 W Douglas Ave in El Cajon.
11 reviews
Umbrella Security Services
Umbrella Security Services is shown as a Security guard service with a 4.9 rating from 12 reviews and a listed address of 4025 Camino del Rio S Unit 337 in San Diego.
12 reviews
Frequently asked questions
How should I choose a security company in San Diego?
Start by defining what you need (armed vs. unarmed guards, mobile patrols, event coverage, etc.), then check credentials like state licensing and insurance. Compare recent client reviews, ask for references, and request a written proposal that outlines services, hours and escalation procedures.
What should I check before hiring a security guard service?
Verify the company’s license and insurance, confirm guard training and background checks, and ask about supervisor oversight and incident reporting. Also review contract terms for cancellation, liability and how additional hours or special requests are billed.
What can I expect to pay for security services?
Costs vary with the type of coverage, guard qualifications, hours required and site risks, so expect a range rather than a single price. Get multiple written estimates and compare what’s included—such as equipment, insurance or supervisory visits—before deciding.
How was this ranking of security companies compiled?
This list was built from Google review data, using an approach that balances average rating with review volume so businesses with very few scores aren’t overrated. It was updated for 2026 to reflect current Google ratings and review counts, but you should still verify details directly with each firm.