Updated: Jul 02, 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 bidding system 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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Constance L Ahern License info
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.
Inactive License
| License # | 529603 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check 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