Updated: Apr 20, 2026
Location and Projects
Address
7770 SIERRA DRIVE, Granite Bay, CA, 95746
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Cortech Construction
Cortech, 7770 Sierra Dr, Granite Bay, CA (Owned by: Charles Henry Bona III, Charles Henry Bona Ii) 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 Cortech, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Cortech Services
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Cortech Contact Information
Phone Number: (415) 602-4221
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Address: 7770 SIERRA DRIVE, Granite Bay, CA 95746
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Remodel two bathrooms - one major and one minor - foundtion upgrade (bolting) requires exhaust fan
Valuation:
$10,000
Permit #:
2006 030608 RS
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of a modular dust barrier cleanroom
Valuation:
$37,141
Permit #:
03000-00000-01945
Status:
applied
Fee:
$1,400
Permit Type:
N/A
Building Type:
N/A
A commercial alteration to addition a free standing clean room in an existing commercial building
Valuation:
$10,000
Permit #:
BLD2009-00077
Status:
final
Fee:
$457
Permit Type:
Alteration
Building Type:
N/A
Vision insight optometry; interior alterations addition exam room
Valuation:
N/A
Permit #:
B-BP2004-584
Status:
final
Fee:
$268
Permit Type:
Caa-comm/indust a...
Building Type:
N/A
Vision insight optometry: electrical for office tenant improvement
Valuation:
N/A
Permit #:
B-EL2004-431
Status:
final
Fee:
$38
Permit Type:
N/A
Building Type:
N/A
Vision insight optometry: mechanical (ducting) for tenant improvement
Valuation:
N/A
Permit #:
B-ME2004-316
Status:
final
Fee:
$24
Permit Type:
N/A
Building Type:
N/A
Vision insight optometry: plumbing for tenant improvement. addition sink to exam
Valuation:
N/A
Permit #:
B-PL2004-449
Status:
withdrawn
Fee:
$25
Permit Type:
N/A
Building Type:
N/A
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Cortech Reviews
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Verified License
BuildZoom confirmed this contractor's license
Cortech License info
Verified License
| License # | 816532 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Cortech 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 | Wesco Insurance Company |
| Bond Value | $15,000 |
Cortech Employees
CI
Charles Henry Bona Ii
Sole Owner
CI
Charles Henry Bona III
Sole Owner
CI
Charles Henry Bona III, Charles Henry Bona Ii
Owner