Updated: May 20, 2026
Location and Projects
Address
2305 RUBICON CT, Walnut Creek, CA, 94598
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Gregg De Haan Construction
Gregg De Haan Construction, 2305 Rubicon Ct, Walnut Creek, CA (Owned by: Gregg Douglas De Haan) holds a General Building license according to the California license board.
Their BuildZoom score of 92 ranks in the top 32% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Gregg De Haan Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Gregg De Haan Construction Services
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Gregg De Haan Construction Contact Information
Phone Number: (510) 815-4421
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Address: 2305 RUBICON CT, Walnut Creek, CA 94598
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Building Permits by Gregg De Haan Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove and recompaction for the foundation of a new construction of a 3-story office building. comply with department order effective date 04/26/2005. permit will expire 30 days from issuance date
Valuation:
$1,000
Permit #:
13030-10000-06738
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to 12010-10000-00726, this permit update the structure inventory to use 4 bicycle parking to replace the 1 car parking space
Valuation:
N/A
Permit #:
12010-10002-00726
Status:
Permit Finaled
Fee:
N/A
Permit Type:
Commercial
Building Type:
(13) Office
New construction of a 3-story office building. comply with department order effective date 04/26/2005. permit will expire 30 days from issuance date
Valuation:
$1,889,720
Permit #:
12010-10000-00726
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Upgrade electrical service to 200 amps
Valuation:
$1,000
Permit #:
E05-0017
Status:
final
Fee:
$220
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Gregg De Haan Construction License info
Verified License
| License # | 882824 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Gregg De Haan Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
Bonded
| Bonded Agent | Nationwide Mutual Insurance Company |
| Bond Value | $15,000 |
Gregg De Haan Construction Employees
GH
Gregg Douglas De Haan
Owner