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Small business government contractors

Profiles of small businesses registered on SAM.gov to win federal contracts: CAGE code, UEI, registration status, SBA certifications and federal contract history. 34,768 of them have won federal contracts or SBIR/STTR awards in the last few years.

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Small businesses in California, with primary NAICS code 561621 (Security Systems Services (except Locksmiths)), by federal contract dollars

Ranked by federal prime contract dollars as a small business since FY2024 (USAspending.gov, as of Nov 5, 2026).

How these are ranked

Prime contract dollars since fiscal year 2024 on contracts where USAspending.gov counts the firm as a small business. “Small” is set per NAICS code: these firms are registered small under their primary code (or SBA-certified). Firms that hold small business subcontracting plans, which only businesses that aren't small file, or have $1 billion or more in these contracts are left out. A profile's yearly totals count all of its prime contracts, so they can be higher.

  1. Ameriguard Security Systems, Inc.Fresno, CA · $33.2 millionSDVOSB
  2. Trofholz Technologies, Inc.Sacramento, CA · $25.7 millionWOSBSDVOSB
  3. Clear Cloud Solutions Inc.Upland, CA · $4.5 million8(a)
  4. Proprietary Access Control Enterprises, IncYorba Linda, CA · $693,786WOSB
  5. Quad-Team Technical Services IncLoma Linda, CA · $591,215
  6. Security 20/20, Inc.Los Angeles, CA · $561,176
  7. Valitus Technologies Inc.Corona, CA · $354,565WOSB
  8. Security Solutions Integration, Inc.Glendale, CA · $214,535SDVOSB
  9. Electronic Innovations, Inc.Richmond, CA · $208,152
  10. BHP ContractingPacheco, CA · $206,627SDVOSB
  11. Enterprise Security, Inc.Yorba Linda, CA · $199,623
  12. Master Technology Integrators, Inc.Gardena, CA · $163,675
  13. Korsar-Contracts LLCIrvine, CA · $160,317
  14. Fireside Security Group IncHayward, CA · $123,485
  15. Total Monitoring Services, IncSacramento, CA · $92,198
  16. Loss Prevention Systems, Inc.Temecula, CA · $82,029
  17. Jade Security SystemsBrawley, CA · $74,070
  18. National Security Works IncorporatedSan Diego, CA · $72,057
  19. Universal Security and Fire, Inc.Sacramento, CA · $69,643
  20. Sierra Building Systems, Inc., a Low Voltage IntegratorRocklin, CA · $62,050SDVOSB
  21. Petrusha Enterprises, Inc.Eureka, CA · $60,250
  22. Adon Products Co IncSacramento, CA · $53,865HUBZone
  23. Safetycentric, Inc.Anaheim, CA · $17,243
  24. Merjan Enterprises IncAgoura Hills, CA · $13,440
  25. Channel Watch Marine Services Inc.Ventura, CA · $11,513
  26. Advantage Total Protection Inc.Courtland, CA · $10,093WOSB
  27. First AlarmAptos, CA · $10,000
  28. Kimberlite CorpFresno, CA · $7,524
  29. Coast Security GroupSan Diego, CA · $4,463
  30. Alarms Unlimited, IncorporatedSan Diego, CA · $429
Top firms by certification in California, with primary NAICS code 561621 (Security Systems Services (except Locksmiths)) (8(a), HUBZone, WOSB and SDVOSB)

Top 8(a) firms in California, with primary NAICS code 561621 (Security Systems Services (except Locksmiths))

  1. Clear Cloud Solutions Inc.Upland, CA · $4.5 million

Top HUBZone firms in California, with primary NAICS code 561621 (Security Systems Services (except Locksmiths))

  1. Adon Products Co IncSacramento, CA · $53,865

Top Women-owned small businesses in California, with primary NAICS code 561621 (Security Systems Services (except Locksmiths))

  1. Trofholz Technologies, Inc.Sacramento, CA · $25.7 million
  2. Proprietary Access Control Enterprises, IncYorba Linda, CA · $693,786
  3. Valitus Technologies Inc.Corona, CA · $354,565
  4. Advantage Total Protection Inc.Courtland, CA · $10,093

Top Service-disabled veteran-owned in California, with primary NAICS code 561621 (Security Systems Services (except Locksmiths))

  1. Ameriguard Security Systems, Inc.Fresno, CA · $33.2 million
  2. Trofholz Technologies, Inc.Sacramento, CA · $25.7 million
  3. Security Solutions Integration, Inc.Glendale, CA · $214,535
  4. BHP ContractingPacheco, CA · $206,627
  5. Sierra Building Systems, Inc., a Low Voltage IntegratorRocklin, CA · $62,050

Hiring small subcontractors?

If you're a prime looking for small businesses to team with, use the filters above to list small firms by state, NAICS code and certification, then open a profile for its SAM.gov registration, the codes it is small under and its contract history. Check any firm by name, UEI or CAGE code with the CAGE code and UEI lookup.

About these profiles

Every business registered on SAM.gov as small under at least one NAICS code, and every SBA-certified firm, has a profile; each profile says which codes it is small under. Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. Looking for partners to team with? See how to become a government subcontractor.

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