Updated: Jan 05, 2026
Location and Projects
Address
PO BOX 1096, Wrentham, MA, 02093
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William Benjamin Harfst Plumber
Their BuildZoom score of 107 ranks in the top 6% of 139,240 Massachusetts licensed contractors.
If you are thinking of hiring William Benjamin Harfst, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
William Benjamin Harfst Services
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William Benjamin Harfst Contact Information
Phone Number: (401) 533-7411
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Address: PO BOX 1096, Wrentham, MA 02093
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William Benjamin Harfst Wrentham
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William Benjamin Harfst has a BuildZoom score of 107, which places them above 94% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2026 |
|
11 projects
|
2025 |
|
10 projects
|
2024 |
|
25 projects
|
2023 |
Our building permit records indicate that William Benjamin Harfst has worked on at least
47.0 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
|
Home Additions |
|
46 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that William Benjamin Harfst mostly works on
plumbing project
and home addition
projects.
Pricing
|
10 projects
|
< $5k |
|
23 projects
|
$5k-$20k |
The typical size of their permits is approximately $5,500. 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 William Benjamin Harfst
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remodel full bathroom kitchen and laundry and install new gas water heater water pipe new boiler
Valuation:
N/A
Permit #:
P-25-0298
Status:
issued
Fee:
$70
Permit Type:
Renovation
Building Type:
N/A
Repair sheetrock install new cabinets flooring and bathroom fixtures
Valuation:
$8,500
Permit #:
R-25-0291
Status:
issued
Fee:
$50
Permit Type:
Repair
Building Type:
N/A
Renovate basement bathroom with wetbar and laundry
Valuation:
$7,800
Permit #:
P-25-0030
Status:
final
Fee:
$280
Permit Type:
Renovation
Building Type:
N/A
Install full bathroom and wet bar using pump
Valuation:
$7,800
Permit #:
25-28P
Status:
expired
Fee:
$112
Permit Type:
N/A
Building Type:
N/A
Install full bathroom using sewage ejector pump
Valuation:
N/A
Permit #:
P-25-0061
Status:
complete
Fee:
$81
Permit Type:
Renovation
Building Type:
N/A
Rough and finish for 2 baths and 2 kitchens. install 2 electric water heaters and water feed for boiler
Valuation:
N/A
Permit #:
P-23-0122
Status:
issued
Fee:
$90
Permit Type:
Renovation
Building Type:
N/A
Replace furnace there’s an existing newer water heater we are redoing the water connections to. test gas per national grid
Valuation:
$1,500
Permit #:
G-24-0120
Status:
issued
Fee:
$50
Permit Type:
Renovation
Building Type:
N/A
Test gas lines for 3 apartment and check for proper venting per gas company
Valuation:
$1,000
Permit #:
G-25-0244
Status:
final
Fee:
$50
Permit Type:
Replacement
Building Type:
N/A
Rough and finish plumbing for a full bathroom and. kitchen. install electric water heater
Valuation:
$7,100
Permit #:
P-24-0083
Status:
complete
Fee:
$140
Permit Type:
Renovation
Building Type:
N/A
Install new fixtures
Valuation:
$2,000
Permit #:
P-25-0100
Status:
issued
Fee:
$55
Permit Type:
Renovation
Building Type:
N/A
Replace existing bathroom with a new one and new layout
Valuation:
$5,500
Permit #:
P-22-0602
Status:
complete
Fee:
$60
Permit Type:
Renovation
Building Type:
N/A
Fix pipe to water heater and addition pressure reducing valve
Valuation:
N/A
Permit #:
P-23-0071
Status:
final
Fee:
$40
Permit Type:
Renovation
Building Type:
N/A
Test water piping in the house per water department
Valuation:
$500
Permit #:
P-23-0068
Status:
issued
Fee:
$40
Permit Type:
Renovation
Building Type:
N/A
Test gas piping as a requirement of the gas company
Valuation:
$500
Permit #:
G-23-0054
Status:
issued
Fee:
$45
Permit Type:
Renovation
Building Type:
N/A
Install full bathroom and laundry plus wet bar
Valuation:
$7,800
Permit #:
25-51P
Status:
approved
Fee:
$110
Permit Type:
N/A
Building Type:
N/A
Install basement bathroom and washer hookup
Valuation:
$7,500
Permit #:
PLUM-072665-2025
Status:
final
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Install full bathroom and wet bar
Valuation:
$6,000
Permit #:
PP-2022-000879
Status:
complete
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
Renovate kitchen and bathroom and addition pressure reducing valve
Valuation:
$3,500
Permit #:
P-24-0102
Status:
issued
Fee:
$60
Permit Type:
Renovation
Building Type:
N/A
Relocate washing machine connection
Valuation:
$1,800
Permit #:
P-23-0145
Status:
final
Fee:
$70
Permit Type:
Renovation
Building Type:
N/A
Install bathroom in basement
Valuation:
$6,000
Permit #:
PP-2023-000099
Status:
complete
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
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BZ Score
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Projects
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William Benjamin Harfst License info
License Not Verified
| License # | 16740 |
| 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 William Benjamin Harfst 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 # | 16740 |
| 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 William Benjamin Harfst at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 16740 |
| 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 William Benjamin Harfst at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
102
Permits
- Building permit records show that William Benjamin Harfst has worked on 102 permitted projects.
William Benjamin Harfst Employees
WH
William Harfst
Owner