R H Hydronics, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor in San Rafael, CA
R H Hydronics operating as a sole owner holds an active California contractor license (CSLB #951610), valid through Aug 31, 2026. First issued in 2010, the license has been on the CSLB roster for 16 years. It carries a single CSLB classification: C-4 — Boiler, Hot Water Heating and Steam Fitting Contractor. Records show an active surety bond on file with North River Insurance Company (the) and active workers' compensation coverage from Norguard Insurance Company. The business is based in San Rafael, in Marin County, California.
- License Number
- 951610
- Issued
- Aug 25, 2010
- Status
- CLEAR
- Expires
- Aug 31, 2026
- Entity
- Sole Owner
- Surety
- North River Insurance Company (the)
- Bond Number
- 04CF621047
- Effective
- Aug 15, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Norguard Insurance Company
- Policy Number
- ROWC651155
- Effective
- Sep 8, 2025
- Expires
- Sep 8, 2026
This contractor warrants a closer look before contracting:
- License expires in 54 days
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is R H Hydronics licensed in California?
Yes. R H Hydronics holds California Contractors State License Board license number 951610, which is active and in good standing. The license was first issued on August 25, 2010. It is valid through August 31, 2026.
What does R H Hydronics specialize in?
R H Hydronics is licensed for one CSLB classification: C-4 Boiler, Hot Water Heating and Steam Fitting Contractor.
Where is R H Hydronics headquartered?
R H Hydronics is headquartered at 35 A Mark Drive, San Rafael, CA 94903, in Marin County, California.
Does R H Hydronics have an active surety bond on file with CSLB?
Yes. R H Hydronics has an active California contractor surety bond filed with North River Insurance Company (the).
Does R H Hydronics carry workers' compensation coverage?
Yes. R H Hydronics carries active workers' compensation coverage through Norguard Insurance Company.
How do I verify R H Hydronics's contractor license?
You can verify R H Hydronics's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=951610.
- License issuedAug 25, 2010
- Bond activeAug 15, 2023
- WC coverage startsSep 8, 2025
- License expiresAug 31, 2026
- WC expiresSep 8, 2026
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