Updated: Jun 03, 2026
Location and Projects
Address
320 HIGHLAND AVE, Wallingford, CT, 06492
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John J Mansolf Jr Plumber
John J Mansolf Jr, 320 Highland Ave, Wallingford, CT (Employee: John Mansolf) holds a Plumbing & Piping Unlimited Contractor license and 1 other license according to the Connecticut license board.
Their BuildZoom score of 95 ranks in the top 22% of 12,093 Connecticut licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring John J Mansolf Jr, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
John J Mansolf Jr Services
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John J Mansolf Jr Contact Information
Phone Number: (203) 815-6276
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Address: 320 HIGHLAND AVE, Wallingford, CT 06492
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John J Mansolf Jr Wallingford
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
John J Mansolf Jr has a BuildZoom score of 95, which places them above 78% of 12,093 contractors in Connecticut.
Activity
|
1 project
|
2025 |
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that John J Mansolf Jr has worked on at least
3.0 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
|
3 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that John J Mansolf Jr mostly works on
plumbing project
projects.
Pricing
|
2 projects
|
< $5k |
|
1 project
|
$5k-$20k |
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.
Garden room water spigot and indirect floor drain to the existing utility sink in the basement. install a domestic hot water recirculation pump on the existing combi boiler
Valuation:
$3,700
Permit #:
PRPL20210004241
Status:
issued
Fee:
N/A
Permit Type:
plumbing
Building Type:
One family dwelli...
Convert from electric water heater to on-demand gas water heater. new gas supply pipe from the existing meter for unit 6 a cut above hair salon
Valuation:
$6,500
Permit #:
P-20-8
Status:
complete
Fee:
N/A
Permit Type:
Water heater
Building Type:
Retail stores/mer...
Garden room baseboard radiation. install a recirculation pump on the existing combi boiler. (pl21-4241)
Valuation:
$3,000
Permit #:
PRHV20210004242
Status:
issued
Fee:
N/A
Permit Type:
HVAC
Building Type:
One family dwelli...
Tenant space #4a; roof top unit; air test and inspect existing gas piping for safe operation per code. (existing natural gas)
Valuation:
$775
Permit #:
P-20-97
Status:
complete
Fee:
$25
Permit Type:
plumbing
Building Type:
Commercial condo
Redirect the existing building drain to the new sewer location. install a drain for 2 washing machines. must meet 2018 state building code along with amendments
Valuation:
$1,700
Permit #:
P-19-6
Status:
issued
Fee:
$39
Permit Type:
plumbing
Building Type:
Residential improved
Emergency replace steam boiler peerless model 63 natural gas. load cals provided. must meet 2018 state building code along with amendments
Valuation:
$5,500
Permit #:
M-19-49
Status:
issued
Fee:
$123
Permit Type:
Gas burner/gas bo...
Building Type:
Residential improved
Replace the existing gas water heater with an on demand water heater ****unit ?
Valuation:
$4,800
Permit #:
P-20-23
Status:
issued
Fee:
$69
Permit Type:
Gas fireplace
Building Type:
Commercial apartm...
Electric water heater replacement
Valuation:
$3,957
Permit #:
24-42B
Status:
complete
Fee:
$67
Permit Type:
Repair (residential)
Building Type:
N/A
Replace (2) 40 gallon indirect water heaters with (1) 80 gallon indirect
Valuation:
$5,500
Permit #:
P-20-26
Status:
complete
Fee:
$69
Permit Type:
plumbing/HVAC- ho...
Building Type:
Commercial building
Replace boiler & piping controls & circulator
Valuation:
$10,000
Permit #:
PR20231939
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install a gas supply for the gas logs. install a bond to the existing water service pipe. must meet 2016 state building code along with amendments.
Valuation:
$950
Permit #:
P-18-150
Status:
issued
Fee:
$78
Permit Type:
Gas Test
Building Type:
Residential Improved
Water heater replacement - 40 gallon gas - 3rd floor
Valuation:
$1,850
Permit #:
P-19-273
Status:
complete
Fee:
$68
Permit Type:
plumbing/HVAC- ho...
Building Type:
Condo
Indirect water heater replacement
Valuation:
$3,500
Permit #:
P-19-349
Status:
issued
Fee:
$68
Permit Type:
plumbing/HVAC- ho...
Building Type:
Condo
Gas test. must meet 2018 state building code along amendments
Valuation:
$250
Permit #:
P-19-21
Status:
issued
Fee:
$53
Permit Type:
Gas test
Building Type:
Commercial building
2nd floor test gas piping system. must meet 2016 state building code along with amendments
Valuation:
$250
Permit #:
P-18-100
Status:
complete
Fee:
$53
Permit Type:
Gas Test
Building Type:
Residential Improved
Water heater replacement - 40 gallon gas - 3rd floor
Valuation:
$1,850
Permit #:
TP-19-273
Status:
filed
Fee:
$68
Permit Type:
Plumbing/HVAC- Ho...
Building Type:
Condo
Rough & trim in remodeling 2nd floor bathroom
Valuation:
$1,800
Permit #:
P-19-12
Status:
complete
Fee:
$53
Permit Type:
plumbing
Building Type:
Residential improved
Test existing gas pipe
Valuation:
$775
Permit #:
TP-20-97
Status:
filed
Fee:
$25
Permit Type:
plumbing
Building Type:
Commercial condo
40 gallon natural gas
Valuation:
$1,900
Permit #:
P-20-90
Status:
issued
Fee:
$68
Permit Type:
plumbing/HVAC- ho...
Building Type:
Residential improved
Boiler replacement. m. nomack
Valuation:
$5,500
Permit #:
M-19-47
Status:
issued
Fee:
$232
Permit Type:
Furnace/boiler
Building Type:
Townhouse
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Verified License
BuildZoom confirmed this contractor's license
John J Mansolf Jr License info
Verified License
| License # | PLM.0204371-P1 |
| Status | Active |
| State | Connecticut |
| Type | Plumbing & Piping Unlimited Contractor |
| Date Issued | 11-01-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for John J Mansolf Jr at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HTG.0385920-S3 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Limited Contractor |
| Date Issued | 09-01-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for John J Mansolf Jr at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
81
Permits
- Building permit records show that John J Mansolf Jr has worked on 81 permitted projects.
John J Mansolf Jr Employees
JM
John Mansolf