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Fire Protection in Ontario, CA

12 records with this classification and Ontario as their locality of record, from CSLB's records, as of November 3, 2026.

Source: California Contractors State License Board (CSLB) — records as of November 3, 2026. Records change; the board’s own CSLB License Check is the current source.

• ADVANCO FIRE PROTECTION INC CLEAR
  License 631600 · expires November 30, 2027
• CALIFORNIA BLAZE PROTECTION LLC CLEAR
  License 1135952 · expires April 30, 2027
• DMG FIRE PROTECTION CLEAR
  License 1062041 · expires January 31, 2028
• FAIRCHILD PLUMBING & MECHANICAL INC CLEAR
  License 606705 · expires November 30, 2026
• FIRE SOLUTION MASTERS CORP CLEAR
  License 1149321 · expires January 31, 2028
• GC CONSTRUCTION & FIRE PROTECTION INC CLEAR
  License 1113745 · expires December 31, 2027
• GUERRERO FIRE PROTECTION INC CLEAR
  License 996238 · expires August 31, 2028
• HCI SPRINKLER INC CLEAR
  License 1005968 · expires July 31, 2027
• HCI SYSTEMS INC CLEAR
  License 905493 · expires February 29, 2028
• JN CONSTRUCTION INC CLEAR
  License 1001396 · expires February 28, 2027
• JNSD CONSTRUCTION INC CLEAR
  License 1080741 · expires September 30, 2027
• SOUTHLAND FIRE PROTECTION CO CLEAR
  License 774844 · expires February 29, 2028