Updated: May 26, 2026
Location and Projects
Address
Cambridge, MA, 02138
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Sean W. Johnston Construction
Sean W. Johnston, Cambridge, MA holds a Building Licenses, Construction Supervisor license and 2 other licenses according to the Massachusetts license board.
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
Their license was verified as active when we last checked. If you are thinking of hiring Sean W. Johnston, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Sean W. Johnston Services
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Sean W. Johnston Contact Information
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Sean W. Johnston Cambridge
Quality
90
47th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Sean W. Johnston has a BuildZoom score of 90, which places them above 47% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2023 |
Our building permit records indicate that Sean W. Johnston 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
|
< $5k |
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.
Install some general lighting and convenience receptacles in new garage. install a 2inch conduit from the existing house to the new garage which we will use to pull a 50amp feed to a small subpanel that will be located in the new garage
Valuation:
$3,500
Permit #:
ELEC-23-1053
Status:
complete
Fee:
$390
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$500
Permit #:
EP-22-765
Status:
complete
Fee:
$100
Permit Type:
Other
Building Type:
N/A
Electrical for phase 2 of house
Valuation:
$10,000
Permit #:
E-18-1164
Status:
issued
Fee:
$388
Permit Type:
N/A
Building Type:
Residential
Switch gear maint. es_amps: 0 es_volts: 0 es_nometers: 0 ns_amps: 0 feeders: norecessedluminaires: 0 noluminaires: 0 noluminaireoutlets: 0 noreceptacleoutlets: 0 noswitches: 0 noranges: 0 nowastedisposers: 0 nodishwashers: 0 nodryers: 0 nowaterheaters: 0 kwwaterheaters: 0 nohydromassagebathtubs: 0 nooilburners: 0 nogasburners: 0 noairconditioners: 0 actotaltons: 0 hpnumber: 0 hptons: ... see more
Valuation:
$5,000
Permit #:
E-11-00887
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Wiring of clean depac mechanical and gowning rooms
Valuation:
$60,000
Permit #:
E-15-117
Status:
issued
Fee:
$600
Permit Type:
Blanket electrical
Building Type:
Commercial
Electrical for gas filling room
Valuation:
$45,000
Permit #:
E-15-1014
Status:
issued
Fee:
$450
Permit Type:
Blanket Electrical
Building Type:
Commercial
No Description Available
Valuation:
$1,000
Permit #:
32209
Status:
N/A
Fee:
$55
Permit Type:
N/A
Building Type:
Residential
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Sean W. Johnston Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Sean W. Johnston License info
Verified License
| License # | CS-115967 |
| 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 Sean W. Johnston at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 21284 |
| Status | Active |
| State | Massachusetts |
| Type | Electrician |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Sean W. Johnston at the Commonwealth of Massachusetts E-Licensing Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 37728 |
| Status | Active |
| State | Massachusetts |
- When BuildZoom last verified this license, it had an expiration date of July, 2016. Check the current license status of Sean W. Johnston with the Massachusetts Department of Consumer Affairs and Business Regulation
This is a sample of licensing data; click here to access a complete history.
90
BuildZoom Score
6
Permits
- Building permit records show that Sean W. Johnston has worked on 6 permitted projects.
Sean W. Johnston Employees
SJ
Sean W. Johnston