California contractor license
BAY AIR SYSTEMS INC
- C10 Electrical
- C20 Warm-Air Heating, Ventilating And Air-Conditioning
- C36 Plumbing
- C-4 Boiler, Hot Water Heating And Steam Fitting
BAY AIR SYSTEMS INC is a contractor with 4 license classifications, including C10 Electrical and C20 Warm-Air Heating, Ventilating And Air-Conditioning, in Concord, Contra Costa County, licensed in California for 42 years (since 1984). As of Oct 22, 2026, the license is active with an expiration date of Jan 31, 2026 on record, a license bond is on file, and permit records show 1–10 permitted projects in the last 3 years.
BAY AIR SYSTEMS INCC10 Electrical · C20 Warm-Air Heating, Ventilating And Air-Conditioning · C36 Plumbing · C-4 Boiler, Hot Water Heating And Steam Fitting · checked Oct 22, 2026
ActiveLicense number#450929
Licensed sinceJan 3, 1984
Years licensed42 years
Expiration on recordJan 31, 2026
City and countyConcord, Contra Costa County
License bondOn file
Projects1–10 permitted projects in the last 3 years
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Source: California Contractors State License Board (CSLB) and City of Los Angeles permit records. Last updated Oct 22, 2026.