Top 10 Home Security in Los Angeles, CA
Quick Answer
Top: HM Security - ADT Authorized Dealer (5), CSI Security (4.9), Alert 360 Home & Business Security Los Angeles (4.9)
1
HM Security - ADT Authorized Dealer
11455 Paramount Blvd Suite B, Downey, CA 90241, USA
Licensed & InsuredTop Rated
Services: Home Security
2
CSI Security
11400 W Olympic Blvd #200, Los Angeles, CA 90064, USA
Licensed & InsuredTop Rated
Services: Home Security
3
Alert 360 Home & Business Security Los Angeles
4740 Green River Rd Suite A, Corona, CA 92880, USA
Licensed & InsuredTop Rated
Services: Home Security
4
Safe and Sound Security
445 S Figueroa St suite 3100, Los Angeles, CA 90071, USA
Licensed & Insured
Services: Home Security
5
Valley Alarm - Access Control | Fire System | Intrusion Detection | CCTV Service | Remote Video Monitoring
804 Pico St, San Fernando, CA 91340, USA
Licensed & Insured
Services: Home Security
6
ACS Security
100 Bel Air Rd, Los Angeles, CA 90077, USA
Services: Home Security
7
Ace Alarm, Inc.
1914 W 8th St, Los Angeles, CA 90057, USA
Services: Home Security
8
Three Factor Security - Security Camera & Alarm Installation Live Monitoring
100 Wilshire Blvd #700, Santa Monica, CA 90401, USA
Services: Home Security
9
Optimum Surveillance
4535 Huntington Dr N, Los Angeles, CA 90032, USA
Services: Home Security
10
Zions Security Alarms
2219 Main St, Santa Monica, CA 90405, USA
Services: Home Security
How We Ranked These Los Angeles Pros
Our rankings are based on a weighted evaluation of five key factors:
- Licensing & Insurance — All listed businesses hold active state licenses verified through official databases.
- Customer Reviews — We aggregate ratings from Google, Yelp, and the BBB, weighting recency and review volume.
- Response Time — Companies offering same-day or 24/7 emergency service score higher.
- Pricing Transparency — Businesses who offer flat-rate pricing or free estimates rank above those with opaque billing.
- Experience & Longevity — Years serving the Los Angeles market and breadth of services factor into overall reliability.
Rankings are reviewed quarterly. Have a correction? Contact us.
Frequently Asked Questions
Best home security in Los Angeles?
Top rated: HM Security - ADT Authorized Dealer (5), CSI Security (4.9), Alert 360 Home & Business Security Los Angeles (4.9).