MC Donagh John Builders and Energy Systems
Verified against CSLB on · View on CSLB
License details
- License number
- 422946
- Classifications
- B · General BuildingC-10 · ElectricalC-27 · LandscapingC-33 · Painting and DecoratingC-36 · PlumbingC-38 · RefrigerationC-4 · Boiler, Hot-Water Heating and Steam FittingC-43 · Sheet MetalHAZ · Hazardous Substance Removal Certification
- License term on file
- May 18, 1982 – May 31, 2028
Business
- (707) 567 5246 (CSLB public record)
- 5057 AUGUST COURT, Castro Valley, CA 94546Alameda County
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Frequently asked questions
Is MC Donagh John Builders and Energy Systems licensed in California?
Yes. MC Donagh John Builders and Energy Systems holds an active California state contractor license (CSLB #422946), verified against the CSLB public record on June 17, 2026.
What is MC Donagh John Builders and Energy Systems's CSLB license number?
MC Donagh John Builders and Energy Systems's California contractor license number is 422946. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.
What kind of work is MC Donagh John Builders and Energy Systems licensed for?
MC Donagh John Builders and Energy Systems is classified under General Building (B), Electrical (C-10), Landscaping (C-27), Painting and Decorating (C-33), Plumbing (C-36), Refrigeration (C-38), Boiler, Hot-Water Heating and Steam Fitting (C-4), Sheet Metal (C-43), and Hazardous Substance Removal Certification (HAZ) by the CSLB.
How do I verify MC Donagh John Builders and Energy Systems's license myself?
Look up license #422946 with the CSLB "Check a License" tool and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of June 17, 2026.
Verify it yourself: How to verify a California contractor license · Look up #422946 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.