Updated: Mar 16, 2026
Location and Projects
Address
6 School St, Milton, MA, 02186
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SG Harold Plumbing Heating
SG Harold Plumbing Heating, 6 School St, Milton, MA (Owned by: Stephen G. Harold) holds a Home Improvement Contractor license and 9 other licenses according to the Massachusetts license board.
Their BuildZoom score of 104 ranks in the top 9% of 139,240 Massachusetts licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring SG Harold Plumbing Heating, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
SG Harold Plumbing Heating Contact Information
Phone Number: (617) 774-8528
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Address: 6 School St, Milton, MA 02186
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SG Harold Plumbing Heating Milton
Quality
104
91st percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
SG Harold Plumbing Heating has a BuildZoom score of 104, which places them above 91% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2025 |
|
4 projects
|
2024 |
|
22 projects
|
2023 |
Our building permit records indicate that SG Harold Plumbing Heating has worked on at least
27.0 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.
Experience
|
4 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that SG Harold Plumbing Heating mostly works on
hvac project
projects.
Pricing
|
21 projects
|
< $5k |
|
7 projects
|
$5k-$20k |
The typical size of their permits is approximately $4,000. This graph shows the distribution of these job values.
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.
Building Permits by SG Harold Plumbing Heating
This is a sample of this contractor's permits. Click here to access their complete permit history.
Hew gas line stove and dryer repipe main sgas line to outside
Valuation:
$1,800
Permit #:
G-25-0154
Status:
issued
Fee:
$70
Permit Type:
Replacement
Building Type:
N/A
Hew gas line stove and dryer repipe main sgas line to outside
Valuation:
$1,800
Permit #:
G-25-0154
Status:
issued
Fee:
$70
Permit Type:
Replacement
Building Type:
N/A
Demolish only lower office
Valuation:
$5,000
Permit #:
R-25-0335
Status:
issued
Fee:
$60
Permit Type:
Demolition
Building Type:
N/A
Replace cross connection device 2 water heaters and water piping
Valuation:
$88,000
Permit #:
21090923
Status:
filed
Fee:
$1,760
Permit Type:
N/A
Building Type:
N/A
#1136- renovate grease system 2 floor drains lavatory mop sink toilet water piping and trap primer
Valuation:
$10,000
Permit #:
21090922
Status:
filed
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Two boler one hot water tank
Valuation:
$5,000
Permit #:
G1436827
Status:
complete
Fee:
$33
Permit Type:
N/A
Building Type:
1-2fam
Hot water tank two boiler
Valuation:
$20,000
Permit #:
PL1436838
Status:
complete
Fee:
$45
Permit Type:
N/A
Building Type:
1-2fam
New boiler hot water tank
Valuation:
$8,000
Permit #:
PL1436806
Status:
filed
Fee:
$30
Permit Type:
N/A
Building Type:
1-2fam
Boiler water heater
Valuation:
$6,000
Permit #:
PL1465036
Status:
complete
Fee:
$30
Permit Type:
N/A
Building Type:
1-2fam
New boiler water heater
Valuation:
$4,000
Permit #:
PL1448662
Status:
complete
Fee:
$30
Permit Type:
N/A
Building Type:
1-2fam
New boiler hot water tank
Valuation:
$2,000
Permit #:
G1436802
Status:
filed
Fee:
$32
Permit Type:
N/A
Building Type:
1-2fam
2 new boilers
Valuation:
$15,000
Permit #:
GP-2023-000031
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
New boiler water tank
Valuation:
$4,000
Permit #:
PL1455791
Status:
complete
Fee:
$30
Permit Type:
N/A
Building Type:
1-2fam
Hot water tank
Valuation:
$300
Permit #:
GP-2023-000157
Status:
triage
Fee:
$50
Permit Type:
N/A
Building Type:
N/A
New boiler
Valuation:
$13,000
Permit #:
G-23-0143
Status:
final
Fee:
$380
Permit Type:
Replacement
Building Type:
N/A
New boiler
Valuation:
$13,000
Permit #:
G-23-0143
Status:
final
Fee:
$380
Permit Type:
Replacement
Building Type:
N/A
Replace gas line to out side generartor
Valuation:
$5,000
Permit #:
GF-24-70
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove hot water boiler and hot water heater install new hot water boiler and hot water heater
Valuation:
$3,250
Permit #:
PL1068488
Status:
filed
Fee:
$25
Permit Type:
N/A
Building Type:
1-2fam
Gas test
Valuation:
$1,000
Permit #:
G1477154
Status:
complete
Fee:
$33
Permit Type:
N/A
Building Type:
1-2fam
New boiler
Valuation:
$3,000
Permit #:
G1465120
Status:
complete
Fee:
$28
Permit Type:
N/A
Building Type:
1-2fam
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SG Harold Plumbing Heating Reviews
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Verified License
BuildZoom confirmed this contractor's license
SG Harold Plumbing Heating License info
Verified License
| License # | 111789 |
| Status | Active |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for SG Harold Plumbing Heating 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 # | 221339 |
| Status | Active |
| City | Newton |
| Type | Residential Builder |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of SG Harold Plumbing Heating with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 221339 |
| Status | Active |
| City | Newton |
| Type | Building Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of SG Harold Plumbing Heating with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 3018 |
| 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 SG Harold Plumbing Heating with 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 # | 10589 |
| Status | Active |
| State | Massachusetts |
| Type | Plumber |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of SG Harold Plumbing Heating with the Commonwealth of Massachusetts E-Licensing Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 10589 |
| Status | Inactive |
| City | Newton |
| Type | Plumbing 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 SG Harold Plumbing Heating at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 20365 |
| Status | Inactive |
| City | Newton |
| Type | Heater 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 SG Harold Plumbing Heating at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 10589 |
| Status | Inactive |
| City | Newton |
| Type | Heater 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 SG Harold Plumbing Heating at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 20365 |
| Status | Inactive |
| City | Newton |
| Type | Plumbing 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 SG Harold Plumbing Heating at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | PM-298698 |
| Status | Inactive |
| State | Massachusetts |
| Type | Pipefitter Master Pp |
- 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 SG Harold Plumbing Heating at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
541
Permits
- Building permit records show that SG Harold Plumbing Heating has worked on 541 permitted projects.
SG Harold Plumbing Heating Employees
SH
Stephen G Harold
Owner
SH
Stephen G. Harold
Owner
SH
Stephen Harold
Owner