theoProsFor pros: get your site Search pros

A 1 Security Systems

Licensed security system installer in Tarzana, Los Angeles, California

BSIS licence active5.0(1 review)

A 1 Security Systems holds BSIS licence ACO 3096, active, licensed since 23 Mar 1989, rated 5.0 from 1 Google reviews.

76score
Request a free quote Google profile Verify on BSIS BBB profile
Photo from A 1 Security Systems
Google · David Hemminger

Report card

  • Licence activeBSIS #ACO 3096, Alarm Company Operator. Issued 23 Mar 1989, expires 31 Mar 2027.
  • Licensed 38 yrsSince 23 Mar 1989.
  • On the BBB, not accreditedIts BBB rating, complaints and reviews are on its Better Business Bureau profile.BBB profile Complaints Reviews

Checked against the Bureau of Security and Investigative Services (BSIS) register on 4 Nov 2026.

Google reviews

5.0(1 review)
David Hemminger★★★★★ 5 months ago

Don Laviolette Was one in a Million

Read all 1 reviews on Google Reviews and photos from Google, refreshed every 30 days.

Why it ranks #47 of 524 security system installers in Los Angeles

Years licensed weight 30100%
Complaint record weight 25n/a
Bond and workers' comp weight 10n/a
Google reviews weight 3555%

Score 75.5 / 100. Claiming this listing or using Theo never changes it. How we rank

Other top security system installers in Los Angeles

See all 524
  1. 1

    Security Plus Co

    Los Angeles, CA · CSLB C-7 #575486 · licensed 37 yrs

    • Licence active
    • Bonded
    • Workers' comp
    964.9(48)Full report
  2. 2

    Construction Services Unlimited

    Los Angeles, CA · CSLB B, C-7, C10, C33 #468913 · licensed 42 yrs

    • Licence active
    • Bonded
    • Works alone
    945.0(21)Full report
  3. 3

    Network Experts Inc

    Los Angeles, CA · CSLB C-7 #891160 · licensed 20 yrs

    • Licence active
    • Bonded
    • Workers' comp
    944.9(33)Full report
  4. 4

    Secure Tech

    Canoga Park, CA · CSLB C10 #813475 · licensed 36 yrs

    • Licence active
    • Bonded
    • Workers' comp
    924.8(22)Full report
  5. 5

    LA Russa Audio / Video Design Inc

    Los Angeles, CA · CSLB C-7 #703701 · licensed 32 yrs

    • Licence active
    • Bonded
    • Workers' comp
    925.0(11)Full report
  6. 6

    Safeguard Alarm & Electrical Corp

    Los Angeles, CA · CSLB C10 #645810 · licensed 34 yrs

    • Licence active
    • Bonded
    • Workers' comp
    905.0(8)Full report