Updated: Dec 16, 2025
Location and Projects
Address
Quincy, MA, 02169
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William R Sinclaire Plumber
William R Sinclaire, Quincy, MA holds a Plumbing Business license and 3 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 William R Sinclaire, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
William R Sinclaire Services
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William R Sinclaire Contact Information
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William R Sinclaire Quincy
Quality
90
47th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William R Sinclaire has a BuildZoom score of 90, which places them above 47% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2024 |
Our building permit records indicate that William R Sinclaire has worked on at least
1.0 project over the past 2 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.
Replace 40 gallon natural draft hot water heater
Valuation:
$2,000
Permit #:
PP-2024-1311
Status:
issued
Fee:
$31
Permit Type:
Replacement
Building Type:
N/A
Replace gas water heater
Valuation:
$500
Permit #:
GP-2024-1310
Status:
issued
Fee:
$62
Permit Type:
Replacement
Building Type:
N/A
Replace gas boiler with indirect water heater
Valuation:
$10,000
Permit #:
P-22-0541
Status:
issued
Fee:
$45
Permit Type:
Replacement
Building Type:
N/A
Replace gas boiler
Valuation:
$1,100
Permit #:
G-22-0497
Status:
issued
Fee:
$40
Permit Type:
Replacement
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
90331
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
91191
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Oil burner
Valuation:
$8,000
Permit #:
E-20-0953
Status:
issued
Fee:
$65
Permit Type:
N/A
Building Type:
N/A
Sheet metal permit
Valuation:
$0
Permit #:
BLD150571
Status:
IN PROGRESS
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace oil boiler with propane boiler
Valuation:
$1,000
Permit #:
G-20-0239
Status:
issued
Fee:
$50
Permit Type:
Replacement
Building Type:
N/A
Install duct work in first and second floor. run refrigeration lines for mini split. run refrigeration lines for drains also
Valuation:
$9,000
Permit #:
2015-04250
Status:
complete
Fee:
$75
Permit Type:
B HVAC
Building Type:
N/A
Replaced boiler
Valuation:
$1,000
Permit #:
P-20-0289
Status:
issued
Fee:
$50
Permit Type:
Replacement
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
G-2017-00277
Status:
issued
Fee:
$60
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
G-2016-00409
Status:
complete
Fee:
$160
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
EP-2011-0261
Status:
complete
Fee:
$50
Permit Type:
Other
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
William R Sinclaire License info
License Not Verified
| License # | 4127 |
| Status | Active |
| State | Massachusetts |
| Type | Plumbing Business |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of William R Sinclaire with the Commonwealth of Massachusetts E-Licensing Board
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| State | Massachusetts |
| Type | Sheet Metal Business |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for William R Sinclaire at the Commonwealth of Massachusetts E-Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 12546 |
| Status | Active |
| State | Massachusetts |
| Type | Sheet Metal |
- BuildZoom verified this license was active as of September 2025.
Verify this license's status for William R Sinclaire at the Commonwealth of Massachusetts E-Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | RC-002641 |
| Status | Inactive |
| State | Massachusetts |
| Type | Refrigeration Contractor |
- 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 R Sinclaire at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
90
BuildZoom Score
10
Permits
- Building permit records show that William R Sinclaire has worked on 10 permitted projects.