Updated: May 25, 2026
Location and Projects
Address
45 PARK ST., Medfield, MA, 02052
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John W Mahoney Jr Construction
Their BuildZoom score of 0 does not rank in the top 50% of Massachusetts contractors.
If you are thinking of hiring John W Mahoney Jr, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
John W Mahoney Jr Services
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John W Mahoney Jr Contact Information
Phone Number: (508) 801-2361
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Address: 45 PARK ST., Medfield, MA 02052
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John W Mahoney Jr Medfield
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are John W Mahoney Jr, click “This is My Business” to update your information.
Activity
|
1 project
|
2023 |
Our building permit records indicate that John W Mahoney Jr has worked on at least
1.0 project over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$20k-$50k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Roof mounted solar array with 27 panels @ 10.665kw dc
Valuation:
$31,591
Permit #:
R-23-1001
Status:
issued
Fee:
$132
Permit Type:
Newfamilydwelling
Building Type:
N/A
None none
Valuation:
N/A
Permit #:
201200210
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
None none
Valuation:
N/A
Permit #:
20092589
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
None none
Valuation:
N/A
Permit #:
20090665
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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License # CS-123203
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John W Mahoney Jr Reviews
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Recent Buildzoom Projects
John W Mahoney Jr License info
License Not Verified
| License # | 112659 |
| Status | Active |
| City | Newton |
| Type | General Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of John W Mahoney Jr with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 112102 |
| Status | Active |
| City | Newton |
| Type | General Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of John W Mahoney Jr with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 112659 |
| Status | Active |
| City | Newton |
| Type | Electrical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of John W Mahoney Jr with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 112102 |
| Status | Active |
| City | Newton |
| Type | Electrical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2021. Check the current license status of John W Mahoney Jr with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 000016517 |
| Status | Inactive |
| City | Newton |
| Type | Electrical Contractor |
- According to the City of Newton Massachusetts, 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 John W Mahoney Jr at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 169809 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business 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 John W Mahoney Jr at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 162171 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business 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 John W Mahoney Jr at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 136090 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business 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 John W Mahoney Jr at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CS-047971 |
| 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 John W Mahoney Jr at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | BO-1470 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Building Official Certification, Local Inspector |
- 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 John W Mahoney Jr at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are John W Mahoney Jr, click “This is My Business” to update your information.
John W Mahoney Jr Employees
JJ
John C. Mahoney Jr
Owner
JJ
John J Mahoney Jr
Owner
JM
John Mahoney
Owner
JM
John W Mahoney
Responsible Person
JJ
John W. Mahonel Jr.
Owner