General contractor Hayward, CA Corporation
Active License #604644 B General Building · Hayward, CA
CSLB records dated Oct 16, 2026 checked Oct 18, 2026 Verify live on CSLB
As listed in CSLB's personnel file dated Oct 17, 2026. Personnel of record qualify the license. The file does not show who owns the business.
We have permit records for San Francisco and San Jose only. Other Bay Area cities don't publish contractor names in a form we can read, so an empty list here says nothing about work elsewhere.
No permits matched this business in the last 24 months in the San Francisco data (matched by license number) or the San Jose data (matched by business name).
CSLB lists complaint and legal-action disclosures on the license's page.
Check complaints on CSLBRanked by the published scoring rules on the methodology page.
Legal name: Riomet Inc · Based in Hayward
workers’ comp insured · licensed 44 yrs
Active · B · #420588 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
C-15 Flooring and Floor CoveringC-33 Painting and DecoratingD-52 Window Cleaning
Based in Hayward
workers’ comp insured · licensed 39 yrs
Active · B · #515219 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Based in Hayward
workers’ comp insured · licensed 38 yrs
Active · B · #526074 · Bond ✓ · Workers' comp ✓ · Verify on CSLB
Yes. CSLB lists license #604644 (B, General Building) as active in its file dated Oct 16, 2026. It was first issued Oct 15, 1990 and expires Jul 31, 2027. Check the live record on CSLB before you sign.
CSLB lists California Hydronics Corporation under license #604644, class B, in Hayward, CA.
CSLB shows a $25,000 contractor bond with Merchants Bonding Company (Mutual) and workers' comp coverage through Liberty Mutual Fire Insurance Company (policy to Oct 1, 2027). Those are the bond and workers' comp records in CSLB's file dated Oct 16, 2026. Ask for its certificate of general liability insurance.
CSLB lists William Edward Kapanen (Responsible Managing Officer) as personnel of record. That file names the people who qualify the license. It does not show who owns the business. CSLB lists the business type as corporation.
On license #604644's page on CSLB. It lists any complaint disclosures and legal actions CSLB publishes for the license.
We don't host reviews. The links under the license details search for California Hydronics in Hayward on Yelp, Google, Houzz, BBB, Thumbtack and Angi, so you read them at the source.
For the business owner. Everything above comes from CSLB and city permit files. Send a correction and we check it against the source.