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Updated: Apr 27, 2026
Location
Address
2118 31st Ave, San Francisco, CA, 94116
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Duffy Excavation Engineer
Duffy Excavation Inc at 2118 31st Ave, San Francisco, CA 94116, held a Engineer license (#970361) with the California contractors license board with an expiration date of 02-29-2016. We last verified the license was expired on 04-26-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our bidding system to be easily matched to qualified, licensed professionals in your area.
Duffy Excavation Inc Services
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Duffy Excavation Inc Contact Information
Phone Number: (415) 568-6428
Address: 2118 31st Ave, San Francisco, CA 94116
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Duffy Excavation Inc License info
Inactive License
| License # | 970361 |
| Status | Inactive |
| State | California |
| Type | General Engineering |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Duffy Excavation Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
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Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Duffy Excavation Inc Employees
GD
Gerald Anthony Duffy
Rmo/Ceo/Pres