Updated: May 23, 2026
Location
Address
99 RIDDELL ST, Greenfield, MA, 01301
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William C Koncal Construction
Their BuildZoom score of 0 does not rank in the top 50% of Massachusetts contractors.
If you are thinking of hiring William C Koncal, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
William C Koncal Services
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William C Koncal Contact Information
Address: 99 RIDDELL ST, Greenfield, MA 01301
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William C Koncal License info
License Not Verified
| License # | 226004 |
| Status | Active |
| City | Newton |
| Type | Residential Builder |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of William C Koncal with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 226004 |
| Status | Active |
| City | Newton |
| Type | Building Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of William C Koncal with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CS-013015 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- According to the Massachusetts Department of Public Safety, 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 William C Koncal at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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William C Koncal Employees
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William C Koncal
Owner