Olsson Plumbing Company, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor in Danville, CA
Olsson Plumbing Company operating as a sole owner holds California contractor license #443706, which is currently expired (lapsed Jul 31, 2026) and not valid to contract until it is renewed. First issued in 1983, the license has been on the CSLB roster for 43 years. It carries 5 CSLB classifications: C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-20 HVAC Contractor, C-36 Plumbing Contractor, C-42 Sanitation System Contractor, and C-43 Sheet Metal Contractor. Records show an active surety bond on file with Hudson Insurance Company and a previously-filed workers' compensation policy with Hartford Casualty Insurance Company that is no longer active. The business is based in Danville, in Contra Costa County, California.
- License Number
- 443706
- Issued
- Jul 27, 1983
- Status
- CLEAR
- Expires
- Jul 31, 2026
- Entity
- Sole Owner
- Surety
- Hudson Insurance Company
- Bond Number
- 30122324
- Effective
- Jun 17, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Hartford Casualty Insurance Company
- Policy Number
- 57WECAT5RXA
- Effective
- Aug 4, 2025
- Expires
- Aug 4, 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 Olsson Plumbing Company licensed in California?
Olsson Plumbing Company previously held California Contractors State License Board license number 443706, but the license expired on July 31, 2026 and is not currently valid. It was first issued on July 27, 1983.
What does Olsson Plumbing Company specialize in?
Olsson Plumbing Company is licensed for 5 CSLB classifications: C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-20 HVAC Contractor, C-36 Plumbing Contractor, C-42 Sanitation System Contractor, and C-43 Sheet Metal Contractor.
Where is Olsson Plumbing Company headquartered?
Olsson Plumbing Company is headquartered at 806 Luz Court, Danville, CA 94526, in Contra Costa County, California.
Does Olsson Plumbing Company have an active surety bond on file with CSLB?
Yes. Olsson Plumbing Company has an active California contractor surety bond filed with Hudson Insurance Company.
Does Olsson Plumbing Company carry workers' compensation coverage?
Olsson Plumbing Company has a previously-filed workers' compensation policy with Hartford Casualty Insurance Company that is no longer active.
How do I verify Olsson Plumbing Company's contractor license?
You can verify Olsson Plumbing Company's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=443706.
- License issuedJul 27, 1983
- Bond activeJun 17, 2023
- WC coverage startsAug 4, 2025
- License expiredJul 31, 2026
- WC expiredAug 4, 2026
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