Location and Projects
Joseph Roland Koller HVAC/Mechanical Contractor
Joseph Roland Koller, 571 Rich Mar St, Westminster, MD (Employees: Joseph R Koller and Steven R. Graves) 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 Joseph Roland Koller, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Joseph Roland Koller 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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Joseph Roland Koller License info
Verified License
| License # | 17264 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Joseph Roland Koller at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 67276 |
| Status | Active |
| State | Maryland |
- When BuildZoom last verified this license, it had an expiration date of March, 2014. Check the current license status of Joseph Roland Koller with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 17264 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- When BuildZoom last verified this license, it had an expiration date of March, 2018. Check the current license status of Joseph Roland Koller 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 # | 78430 |
| Status | Inactive |
| State | Maryland |
| Type | Plumbers |
- 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 Joseph Roland Koller at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.