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

8 records with this classification and Hayward 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.

• A & B MECHANICAL INC CLEAR
  License 740508 · expires September 30, 2027
• BAY CITY BOILER COMPANY CLEAR
  License 320288 · expires August 31, 2028
• CHRIS' PLUMBING INC CLEAR
  License 795046 · expires May 31, 2027
• CLIMATECARE BOILER WORKS CLEAR
  License 1126949 · expires September 30, 2028
• D W NICHOLSON CORPORATION CLEAR
  License 68847 · expires March 31, 2027
• J J COMMERCIAL WATER HEATERS CLEAR
  License 1139164 · expires June 30, 2027
• RF MACDONALD CO LLC CLEAR
  License 220117 · expires May 31, 2028
• VAN-MULDER SHEET METAL INC CLEAR
  License 279981 · expires September 30, 2027