Updated: May 27, 2026
Location and Projects
Address
Hingham, MA, 02043
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John F Mahon Construction
John F Mahon at Hingham, MA 02043, held a General Contractor license (#CSSL-100175) with the Massachusetts contractors license board with an expiration date of 12-21-2025. We last verified the license was expired on 05-26-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 139,240 Massachusetts contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
John F Mahon Services
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John F Mahon Contact Information
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John F Mahon Hingham
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 F Mahon, click “This is My Business” to update your information.
Activity
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that John F Mahon has worked on at least
2.0 projects 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
|
< $5k |
|
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.
Addition full bathroom and laundry on first floor install new kitchen cabinets install gas fireplace in existing chimney
Valuation:
$25,000
Permit #:
R-24-0313
Status:
complete
Fee:
$250
Permit Type:
Alteration
Building Type:
N/A
Strip and reroof house with gaf architectural shingles
Valuation:
N/A
Permit #:
58214
Status:
ISSUED
Fee:
$240
Permit Type:
N/A
Building Type:
N/A
Strip and reshingle existing roof
Valuation:
N/A
Permit #:
58413
Status:
ISSUED
Fee:
$136
Permit Type:
N/A
Building Type:
N/A
Talbots building a 2nd floor
Valuation:
$45,000
Permit #:
1400938E
Status:
issued
Fee:
$256
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$40,000
Permit #:
14-329
Status:
N/A
Fee:
$156
Permit Type:
N/A
Building Type:
N/A
Install 14 vinyl replacemnt wndws
Valuation:
N/A
Permit #:
40192
Status:
ISSUED
Fee:
$115
Permit Type:
N/A
Building Type:
N/A
Strip roof and reshingle
Valuation:
N/A
Permit #:
50156
Status:
ISSUED
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
Addition stairs to grade off of existing deck
Valuation:
$1,000
Permit #:
B-23-376
Status:
complete
Fee:
N/A
Permit Type:
Open deck/farmers...
Building Type:
Multi unit condo
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John F Mahon Reviews
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Recent Buildzoom Projects
John F Mahon License info
Inactive License
| License # | CSSL-100175 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor Specialty |
- 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 F Mahon at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CSSL-100175 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Cssl Dm Demolition |
- 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 F Mahon at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CSSL-100175 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Cssl Rf Roofing |
- 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 F Mahon at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CSSL-100175 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Cssl Ws Windows And Siding |
- 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 F Mahon 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 F Mahon, click “This is My Business” to update your information.
8
Permits
- Building permit records show that John F Mahon has worked on 8 permitted projects.