Updated: Jun 04, 2026
Location and Projects
Address
P O BOX 1039, Los Gatos, CA, 95031
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John Gregory Trefry Construction
John Gregory Trefry, Los, Po Box 1039, Los Gatos, CA (Employee: Philip Ernest Trefry) holds a General Building license and 2 other licenses 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 John Gregory Trefry, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
John Gregory Trefry Services
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John Gregory Trefry Contact Information
Phone Number: (408) 981-1047
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Address: P O BOX 1039, Los Gatos, CA 95031
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Install new garden window in master bedroom
Valuation:
$1,000
Permit #:
B96-000798
Status:
final
Fee:
$64
Permit Type:
N/A
Building Type:
N/A
Repair deck joists; stabilize deck 600 sf
Valuation:
$10,000
Permit #:
B05-0072
Status:
final
Fee:
$538
Permit Type:
N/A
Building Type:
N/A
Addition 108'(laundry rm)remodel 52 contractor: john gregory trefry (03/18/05)
Valuation:
N/A
Permit #:
05020053
Status:
final
Fee:
$1,000
Permit Type:
N/A
Building Type:
N/A
Upgrade electrical service to 200 amp
Valuation:
$0
Permit #:
2002 055158 RS
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
John Gregory Trefry License info
Verified License
| License # | 692608 |
| 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 John Gregory Trefry at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-F190260-1 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Sole Ownership |
- According to the United States Environmental Protection Agency, 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 John Gregory Trefry at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 959463 |
| Status | Inactive |
| State | California |
| Type | Tile (Ceramic And Mosaic) |
| 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 John Gregory Trefry 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 | Western Surety Company |
| Bond Value | $15,000 |
John Gregory Trefry Employees
JT
John Gregory Trefry
Sole Owner
PT
Philip Ernest Trefry
Sole Owner