Location and Projects
James Leo Gannon III HVAC/Mechanical Contractor
James Leo Gannon III, 11361 Chapel Rd, Cordova, MD (Owned by: James Leo Gannon Iii) holds a Heating, Ventilation, Air Conditioning And Refrigeration license and 3 other licenses according to the Maryland license board.
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
Their license was verified as active when we last checked. If you are thinking of hiring James Leo Gannon III, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
James Leo Gannon III Contact Information
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This is a sample of this contractor's permits. Click here to access their complete permit history.
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James Leo Gannon III License info
Verified License
| License # | 2301 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for James Leo Gannon III at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HM-0000579 |
| Status | Active |
| State | Delaware |
| Type | Hvacr |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for James Leo Gannon III at the State of Delaware.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 80802 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
| Class | Heating, Ventilation, Air Conditioning and Refrigeration |
- When BuildZoom last verified this license, it had an expiration date of December, 2017. Check the current license status of James Leo Gannon III with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 80802 |
| Status | Inactive |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- According to the Maryland Department of Labor, Licensing & Regulation, 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 James Leo Gannon III at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.