Mc Donagh John Builders and Energy Systems, B General Building Contractor in Castro Valley, CA
Mc Donagh John Builders and Energy Systems operating as a sole owner holds California contractor license #422946, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 1982, the license has been on the CSLB roster for 44 years. It carries 8 CSLB classifications: B General Building Contractor, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-10 Electrical Contractor, C-27 Landscaping Contractor, C-33 Painting and Decorating Contractor, C-36 Plumbing Contractor, C-38 Refrigeration Contractor, and C-43 Sheet Metal Contractor. Records show an active surety bond on file with Merchants Bonding Company (mutual) and an exempt workers' compensation status (no employees on payroll). The business is based in Castro Valley, in Alameda County, California.
- License Number
- 422946
- Issued
- May 18, 1982
- Status
- CLEAR
- Expires
- May 31, 2026
- Entity
- Sole Owner
- Surety
- Merchants Bonding Company (mutual)
- Bond Number
- 101812589
- Effective
- Mar 16, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Apr 5, 2024
- Expires
- —
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Mc Donagh John Builders and Energy Systems licensed in California?
Mc Donagh John Builders and Energy Systems previously held California Contractors State License Board license number 422946, but the license expired on May 31, 2026 and is not currently valid. It was first issued on May 18, 1982.
What does Mc Donagh John Builders and Energy Systems specialize in?
Mc Donagh John Builders and Energy Systems is licensed for 8 CSLB classifications: B General Building Contractor, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor, C-10 Electrical Contractor, C-27 Landscaping Contractor, C-33 Painting and Decorating Contractor, C-36 Plumbing Contractor, C-38 Refrigeration Contractor, and C-43 Sheet Metal Contractor.
Where is Mc Donagh John Builders and Energy Systems headquartered?
Mc Donagh John Builders and Energy Systems is headquartered at 5057 August Court, Castro Valley, CA 94546, in Alameda County, California.
Does Mc Donagh John Builders and Energy Systems have an active surety bond on file with CSLB?
Yes. Mc Donagh John Builders and Energy Systems has an active California contractor surety bond filed with Merchants Bonding Company (mutual).
Does Mc Donagh John Builders and Energy Systems carry workers' compensation coverage?
Mc Donagh John Builders and Energy Systems reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Mc Donagh John Builders and Energy Systems's contractor license?
You can verify Mc Donagh John Builders and Energy Systems's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=422946.
- License issuedMay 18, 1982
- WC coverage startsApr 5, 2024
- Bond activeMar 16, 2026
- License expiredMay 31, 2026
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