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 California contractor license #951610, which is currently expired (lapsed Aug 31, 2026) and not valid to contract until it is renewed. 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Insurance Company (the) and a previously-filed workers' compensation policy with Norguard Insurance Company that is no longer active. 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 has a compliance issue in its public CSLB record:
- License expired
- No active workers' comp on file
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?
R H Hydronics previously held California Contractors State License Board license number 951610, but the license expired on August 31, 2026 and is not currently valid. It was first issued on August 25, 2010.
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?
R H Hydronics has a previously-filed workers' compensation policy with Norguard Insurance Company that is no longer active.
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 expiredAug 31, 2026
- WC expiredSep 8, 2026
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