Updated: Jun 01, 2026
Location and Projects
Address
4370 ALPINE ROAD #201, Portola Valley, CA, 94028
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Constance L Ahern Construction
Constance L Ahern, 4370 Alpine Rd, Portola Valley, CA (Employee: Hartnell Terrence Blaine) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 93 ranks in the top 27% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Constance L Ahern, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Constance L Ahern Services
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Constance L Ahern Contact Information
Phone Number: (650) 854-3171
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Address: 4370 ALPINE ROAD #201, Portola Valley, CA 94028
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Abate violation: (e) inground swimming pool; remove liner and backfill pool w top soil; disconnect plumbing and electrical associated w pool
Valuation:
N/A
Permit #:
BLD2003-01053
Status:
final
Fee:
$63
Permit Type:
N/A
Building Type:
N/A
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Constance L Ahern License info
License Not Verified
| License # | 529603 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of Constance L Ahern with the California Contractors State License Board
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 905786 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Constance L Ahern at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Compwest Insurance Co |
Constance L Ahern Employees
CA
Constance L Ahern
Sole Owner
HB
Hartnell Terrence Blaine
Sole Owner