Updated: Jun 12, 2026
Location and Projects
Address
430 Danforth Avenue, Jersey City, NJ, 07305
Use our bidding system to
request a quote
William J. Guarini Plumber
William J. Guarini, 430 Danforth Ave, Jersey City, NJ holds a Home Improvement Business Contr license according to the New Jersey license board.
Their BuildZoom score of 111 ranks in the top 4% of 88,231 New Jersey licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring William J. Guarini, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
William J. Guarini Contact Information
Address: 430 Danforth Avenue, Jersey City, NJ 07305
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
William J. Guarini Jersey City
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William J. Guarini has a BuildZoom score of 111, which places them above 96% of 88,231 contractors in New Jersey.
Activity
|
87 projects
|
2025 |
|
115 projects
|
2024 |
|
84 projects
|
2023 |
Our building permit records indicate that William J. Guarini has worked on at least
286.0 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
|
203 projects
|
Plumbing projects |
|
13 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that William J. Guarini mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
122 projects
|
< $5k |
|
19 projects
|
$5k-$20k |
The typical size of their permits is approximately $1,859. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Sewer disconnect from storm drain reconnect 4 sewer to main
Valuation:
N/A
Permit #:
25-02-087
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New bathroom installation/rn/rn/rntenant fit-out office
Valuation:
N/A
Permit #:
25-01-047+A
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sprinkler heads/fire pump/back flow/alarm devices
Valuation:
$325,000
Permit #:
21-11-112+A
Status:
issued
Fee:
$6,515
Permit Type:
N/A
Building Type:
N/A
1 electric water heater
Valuation:
N/A
Permit #:
25-02-024
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sewer connection replace 4 sewer
Valuation:
N/A
Permit #:
25-03-005
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1 water heater
Valuation:
N/A
Permit #:
25-02-035
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1 water heater
Valuation:
N/A
Permit #:
25-02-032
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1 water heater
Valuation:
N/A
Permit #:
25-01-092
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater water heater
Valuation:
N/A
Permit #:
25-04-019
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater water heater
Valuation:
N/A
Permit #:
25-03-114
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater water heater
Valuation:
N/A
Permit #:
25-03-062
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater water heater
Valuation:
N/A
Permit #:
25-03-060
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater
Valuation:
N/A
Permit #:
25-02-033
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater water heater
Valuation:
N/A
Permit #:
25-02-025
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater water heater
Valuation:
N/A
Permit #:
25-02-022
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater
Valuation:
N/A
Permit #:
25-01-055
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Water heater
Valuation:
N/A
Permit #:
25-01-054
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Chimney liner water heater water heater 1 chimney liner
Valuation:
N/A
Permit #:
24-12-098
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Chimney liner water heater water heater + chimney liner
Valuation:
N/A
Permit #:
24-12-079
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Chimney liner water heater water heater & chimney liner
Valuation:
N/A
Permit #:
24-12-076
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
108
BZ Score
-
Avg Project
-
Projects
License # 36BI01361800
Point Pleasant Beach, NJ
100
BZ Score
-
Avg Project
-
Projects
105
BZ Score
-
Avg Project
-
Projects
William J. Guarini Reviews
BuildZoom hasn't received any reviews for William J. Guarini. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you a plumber in your area today
We'll search our vast network of Plumbers and connect
you with one that meets your needs today.
Verified License
BuildZoom confirmed this contractor's license
William J. Guarini License info
Verified License
| License # | 13VH02776200 |
| Status | Active |
| State | New Jersey |
| Type | Home Improvement Business Contr |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for William J. Guarini at the New Jersey Department of Law & Public Safety.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
4.4K
Permits
- Building permit records show that William J. Guarini has worked on 4360 permitted projects.