Updated: Jul 24, 2026
Location and Projects
Address
46 Church St, Cohasset, MA, 02025
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John L Carlson Construction
John L Carlson, 46 Church St, Cohasset, MA (Owned by: Jmp Carpentry Service) holds a Building Licenses, Construction Supervisor license and 5 other licenses according to the Massachusetts license board.
Their BuildZoom score of 91 ranks in the top 37% of 139,240 Massachusetts licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring John L Carlson, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
John L Carlson Services
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John L Carlson Contact Information
Phone Number: (508) 839-9486
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Address: 46 Church St, Cohasset, MA 02025
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John L Carlson Cohasset
Quality
91
63rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
John L Carlson has a BuildZoom score of 91, which places them above 63% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2025 |
Our building permit records indicate that John L Carlson has worked on at least
1.0 project over the past year.
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
|
$250k-$500k |
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.
Full renovation of the existing dwelling. change floor plan to include 3 bedrooms and 2.5 bathrooms. foundation footprint and frame/structure to remain as existing
Valuation:
$71,000
Permit #:
R-21-0139
Status:
issued
Fee:
$710
Permit Type:
Repair alteration...
Building Type:
N/A
None none
Valuation:
N/A
Permit #:
201403970
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
None none
Valuation:
N/A
Permit #:
201403970
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Full renovation of the interior and exterior of existing house. adding shed dormer to front of house. house will remain 3 bedrooms as existing and have 2.5 baths
Valuation:
$317,000
Permit #:
R-25-0322
Status:
issued
Fee:
$3,170
Permit Type:
Repair alteration...
Building Type:
N/A
Select demolish in prep for renovation this is not a full building demolish. renovation permit is pending septic plan
Valuation:
$5,000
Permit #:
R-25-0299
Status:
issued
Fee:
$75
Permit Type:
Selectivedemolition
Building Type:
N/A
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Verified License
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John L Carlson License info
Verified License
| License # | CS-115360 |
| Status | Active |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for John L Carlson at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 201053 |
| Status | Active |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for John L Carlson at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 111918 |
| 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 L Carlson with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 111918 |
| 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 L Carlson with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 101261 |
| 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 L Carlson 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 # | CSFA-046719 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor 1 & 2 Family |
- 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 L Carlson at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
John L Carlson Employees
JS
Jmp Carpentry Service
Owner
JC
John Carlson
Owner
JC
John L Carlson
Responsible Person