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

4 records with this classification and Sonoma 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.

• AMERICAN BUILDERS CLEAR
  License 427930 · expires September 30, 2028
• BONNEY INC DBA HEATWAVE SYSTEMS CLEAR
  License 857673 · expires April 30, 2027
• PETERSON MECHANICAL INC CLEAR
  License 171486 · expires June 30, 2028
• PIONEER BUILDERS Contr Bond Susp
  License 555580 · expires January 31, 2027