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Best Security System in San Diego, CA (2026)

13 businesses found · Ranked by quality, not ads

Find top-rated security system businesses in San Diego, CA. Every business is ranked by Quality Score — our quality metric based on responsiveness, data completeness, and verified reviews. Not who pays the most.

San Diego CCTV Pros

San Diego, CA

Security System

★ 4.8(27 reviews)

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Bay Alarm Company

San Diego, CA

Security System

★ 3.6(25 reviews)

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Halcyon Security Solutions

San Diego, CA

Security System

★ 5.0(95 reviews)

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United Security Services - Security Guard Services in San Diego

San Diego, CA

Security System

★ 4.7(6 reviews)

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Alert 360 Home & Business Security San Diego

San Diego, CA

Security System

★ 4.8(156 reviews)

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Real Home Security, LLC- Authorized ADT Dealer

San Diego, CA

Security System

★ 4.9(148 reviews)

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ASAP Security Guards

San Diego, CA

Security System

★ 4.4(67 reviews)

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Safety Zone Security, Inc. - San Diego

San Diego, CA

Security System

★ 5.0(4 reviews)

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Smart Shield Systems Commercial & Residential Security

San Diego, CA

Security System

★ 4.9(106 reviews)

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Safe and Sound Security

San Diego, CA

Security System

★ 4.8(12 reviews)

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ProTech Security Systems

San Diego, CA

Security System

★ 4.6(18 reviews)

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ADT Security Services

San Diego, CA

Security System

★ 3.2(76 reviews)

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SSD Alarm

San Diego, CA

Security System

★ 5.0(8 reviews)

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