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Boiler, Hot-Water Heating and Steam Fitting in Petaluma, CA

8 records with this classification and Petaluma 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.

• BRYAN MASTERSON ENTERPRISES CLEAR
  License 271933 · expires November 30, 2027
• C N S MECHANICAL INC CLEAR
  License 881051 · expires July 31, 2028
• ERNEST ONGARO & SONS INC DBA ONGARO & SONS CLEAR
  License 215233 · expires January 31, 2028
• ICON PLUMBING & DESIGN CLEAR
  License 904120 · expires June 30, 2027
• INCOM MECHANICAL INC CLEAR
  License 517617 · expires September 30, 2027
• JOHN OWENS SERVICES INC CLEAR
  License 501853 · expires June 30, 2028
• RUST PLUMBING INC CLEAR
  License 976035 · expires September 30, 2027
• SCOTT M MILLER Contr Bond Susp
  License 1006302 · expires August 31, 2027