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Mc Donagh John Builders and Energy Systems: CSLB License #422946
Source: CSLB public data · Updated November 1, 2026 · Official CSLB record
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The license is active with no suspension on record, though classifications, bonds and secondary flags still deserve a look.
License details
- License number
- 422946
- Primary status
- CLEAR · what this means
- Business type
- Sole Owner
- Full business name
- John Mc Donagh Builders and Energy Systems
- Issued
- May 18, 1982 (44 years)
- Expires
- May 31, 2028
- Classifications
- B General Building Contractor
C-10 Electrical Contractor
C-27 Landscaping Contractor
C-33 Painting and Decorating Contractor
C-36 Plumbing Contractor
C-38 Refrigeration Contractor
C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
C-43 Sheet Metal Contractor
HAZ Hazardous Substance Removal Certification - Location
- Castro Valley, 94546
- Phone
- (707) 567 5246
This is a sole-owner license, so we show only the city and ZIP code.
Workers' compensation
- Type
- Exempt
- Effective
- May 7, 2026
Confirm coverage with CSLB's insurer search. How to check workers' comp.
Contractor's bond
- Surety
- Merchants Bonding Company (mutual)
- Bond number
- 101812589
- Amount
- $25,000
- Effective
- March 16, 2026
Status history
No changes recorded since we began tracking this license on November 1, 2026. We compare every weekly CSLB file and log changes to status, bonds, workers' comp and classifications here.
Related
- Licensed general contractors in Castro Valley
- Licensed electricians in Castro Valley
- Licensed landscapers in Castro Valley
- Licensed painters in Castro Valley
- Licensed plumbers in Castro Valley
- Licensed contractors in Castro Valley
- Contractors in Alameda County
- What "CLEAR" means
- How to check a contractor license
Data: CSLB Public Data Portal, file dated November 1, 2026. Status can change at any time. Verify on CSLB's Instant License Check. This site is not a consumer reporting agency under the FCRA; don't use it for employment, credit, insurance or housing decisions about an individual.