Updated: May 24, 2026
Location
Address
18432 DONNA LANE, Perris, CA, 92570
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Gregory Carl Kilbourn Site Work Contractor
Gregory Carl Kilbourn, 18432 Donna Ln, Perris, CA (Owned by: Paul Sean Custa) holds a Earthwork And Paving license and 3 other licenses 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 Gregory Carl Kilbourn, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Gregory Carl Kilbourn Contact Information
Phone Number: (408) 655-4170
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Address: 18432 DONNA LANE, Perris, CA 92570
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Verified License
BuildZoom confirmed this contractor's license
Gregory Carl Kilbourn License info
Verified License
| License # | 876290 |
| Status | Active |
| State | California |
| Type | Earthwork And Paving |
| Business Type | Sole Ownership, Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Gregory Carl Kilbourn at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 943772 |
| Status | Inactive |
| State | California |
| Type | General Engineering |
| Business Type | Sole Ownership, Corporation |
- 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 Gregory Carl Kilbourn at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 652209 |
| Status | Inactive |
| State | California |
| Type | Parking And Highway Improvement |
| Business Type | Sole Ownership, Corporation |
- 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 Gregory Carl Kilbourn at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 800007 |
| Status | Inactive |
| State | California |
| Type | Parking And Highway Improvement, General Engineering |
| Business Type | Sole Ownership, Corporation |
- 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 Gregory Carl Kilbourn 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 | Accredited Surety & Casualty Company Inc |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
Gregory Carl Kilbourn Employees
GK
Gregory Carl Kilbourn
Sole Owner
NG
Norman Daniel Galanski
Sole Owner
PC
Paul Sean Custa
Owner
SC
Sherry Custa
Officer
SC
Sherry Custa
Officer