Updated: May 25, 2026
Location
Address
P.O. Box 22, New Ipswich, NH
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William J Coponen Construction
William J Coponen, New, Po Box 22, New Ipswich, NH (Employee: Michael J Coponen) holds a Building Licenses, Construction Supervisor license and 3 other licenses according to the Massachusetts license board.
Their BuildZoom score of 91 ranks in the top 37% of 13,069 New Hampshire licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring William J Coponen, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
William J Coponen Services
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William J Coponen Contact Information
Address: P.O. Box 22, New Ipswich, NH
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Verified License
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William J Coponen License info
Verified License
| License # | CS-069149 |
| Status | Active |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for William J Coponen at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 209965 |
| 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 J Coponen with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 209966 |
| 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 J Coponen with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CS-084814 |
| 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 J Coponen at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
William J Coponen Employees
MC
Michael J Coponen
Owner
WC
William J Coponen
Owner