Updated: Nov 23, 2025
Location and Projects
Address
671 Old Willets Path, Hauppauge, NY, 11788
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Irwin Contracting Plumber
Irwin Contracting Inc, 671 Old Willets Path, Hauppauge, NY (Owned by: John Irwin) holds a Home Improvement Contractors license and 11 other licenses according to the Nassau County license board.
Their BuildZoom score of 111 ranks in the top 4% of 77,888 New York licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Irwin Contracting Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Irwin Contracting Inc Services
Start a project today:
Custom Home Build
New Home Construction
Medium Multi-Family New Con...
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Roofing
Hardwood Flooring
Carpets
Laminate Flooring
Other Flooring
HVAC
Painting
Framing
Wood Fences
Backsplash and Countertops
Stonework
Tile Flooring
Other Stone and Tile
Drywall
Interior Plaster
Brick and Blockwork
Other Masonry
Foundations
Other Concrete
Demolition
Paving, Driveways, and Side...
Irwin Contracting Inc Contact Information
Phone Number: (631) 864-1062
Address: 671 Old Willets Path, Hauppauge, NY 11788
Irwin Contracting Inc Hauppauge
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Irwin Contracting Inc has a BuildZoom score of 111, which places them above 96% of 77,888 contractors in New York.
Activity
|
8 projects
|
2024 |
|
18 projects
|
2023 |
Our building permit records indicate that Irwin Contracting Inc has worked on at least
26.0 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
|
26 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Irwin Contracting Inc mostly works on
plumbing project
projects.
Pricing
|
2 projects
|
$100k-$250k |
|
1 project
|
$500k-$1mil |
|
1 project
|
$1mil+ |
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 Irwin Contracting Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Plumbing - alteration type 1 existing 2 story 1 family dwelling. interior renovation of all existing floors proposed horizontal and vertical enlargement and for the removal of garage and curb cut to create 2 family dwelling as per plan
Valuation:
$403,000
Permit #:
321516267-01-PL
Status:
issued
Fee:
$1,365
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 filing for interior renovations to existing 2.5 story building with removal and installation of new partitions new plumbing and removal of some plumbing. no change to use occupancy or bulk
Valuation:
$335,700
Permit #:
321652467-01-PL
Status:
issued
Fee:
$507
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 remove and dispose of existing plumbing fixtures piping and accessories. provide and install new plumbing fixtures piping and accessories. there is no change to use egress or occupancy
Valuation:
$15,000
Permit #:
340505466-01-PL
Status:
issued
Fee:
$156
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 interior renovation on existing 3-story 6-family dwelling. plumbing and partition work as per plan. no change in use occupancy room count or egress
Valuation:
$70,000
Permit #:
310125414-01-PL
Status:
issued
Fee:
$810
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 installation of new gas pipe meter valves supports and all accessories necessary for a complete system. there is no change to use occupancy or egress
Valuation:
$10,000
Permit #:
340482613-01-PL
Status:
issued
Fee:
$143
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 interior renovation as per plans filed herewith
Valuation:
$280,000
Permit #:
140585953-01-PL
Status:
issued
Fee:
$1,934
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 existing m/d (5) unit residential building. removal of existing boiler and installation of individual boiler/hwh units for each apartement in existing boiler room in cellar
Valuation:
$10,000
Permit #:
240146418-01-PL
Status:
issued
Fee:
$317
Permit Type:
N/A
Building Type:
N/A
Existing 2 story 1 family dwelling. interior renovation of all existing floors proposed horizontal and vertical enlargement and for the removal of garage and curb cut to create 2 family dwelling as per plan
Valuation:
$403,000
Permit #:
321516267
Status:
ISSUED
Fee:
$1,365
Permit Type:
N/A
Building Type:
N/A
Interior renovation remove mezzanine and associated exterior wall and fire escape. removal and installation of non- load bearing walls. removal and installation of plumbingfixtures
Valuation:
$693,455
Permit #:
321582257
Status:
ISSUED
Fee:
$7,362
Permit Type:
N/A
Building Type:
N/A
plumbing- alteration type 2 filed damaged material for existing 4 family apartment. replace existing interior wall replace floor rerplace joist accordingly as plans. replace plumbingfixfute. no change or occupancy is involve this application
Valuation:
$150,000
Permit #:
220552266-01-PL
Status:
issued
Fee:
$1,919
Permit Type:
N/A
Building Type:
C3-walk-up apartment
Minor interior renovation and plumbingwork on the 4th floor to apartment 7 & 8 and creating duplex at 1st floor to cellar in apartment 1 as well as cosmetic repairs to common areas throughout as per plan. no change in occupancy bulk or egress
Valuation:
$40,410
Permit #:
321311291
Status:
ISSUED
Fee:
$636
Permit Type:
N/A
Building Type:
N/A
Horizontal enlargement at rear and side on an existing one-family dwelling plumbingand partition work as per plan. no change in use occupancy or exit
Valuation:
$185,000
Permit #:
321581659
Status:
ISSUED
Fee:
$701
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 interior renovation of existing apartment 1a electrical meter room gas mete r room storage areas and garbage disposal room at cellar. no changes in use eg ress and occupancy is involved at this application
Valuation:
$17,000
Permit #:
102592767-01-PL
Status:
issued
Fee:
$264
Permit Type:
N/A
Building Type:
C1-walk-up apartment
Herewith filing for interior renovation as per plans. no change to use egress or occupancy
Valuation:
$325,600
Permit #:
340312799
Status:
ISSUED
Fee:
$1,783
Permit Type:
N/A
Building Type:
N/A
Proposed renovation. change use from one family to two family dwelling; including plumbingelectrical work. remedying violations for curb cut
Valuation:
$185,000
Permit #:
321659905
Status:
ISSUED
Fee:
$798
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 1 subsequent filing to alt-1 job#321640569 for plumbing work
Valuation:
$134,850
Permit #:
321640569-04-PL
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Existing 3 story 3 family dwelling. horizontal enlargement at rear interior renovation and plumbingwork through out as per plan. no change in occupancy or egress
Valuation:
$55,775
Permit #:
321689847
Status:
ISSUED
Fee:
$263
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
321267473-02-PL
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
421535583-02-PL
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
321321887-02-PL
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Irwin Contracting Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Irwin Contracting Inc License info
Verified License
| License # | H1756840000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Irwin Contracting Inc at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | H18H4380000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- When BuildZoom last verified this license, it had an expiration date of April, 2026. Check the current license status of Irwin Contracting Inc with the Nassau County Office of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 001917 |
| Status | Active |
| State | New York |
| Type | Plumber |
- BuildZoom has not verified this license since March, 2024.
Verify this license's status for Irwin Contracting Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 1917 |
| Status | Active |
| State | New York |
| Type | Master Plumber |
- When BuildZoom last verified this license, it had an expiration date of December, 2014. Check the current license status of Irwin Contracting Inc with the New York City Department of Buildings
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 612659 |
| Status | Active |
| State | New York |
| Type | General Contractor Registered, General Contractor Registered, General Contractor Registered |
- When BuildZoom last verified this license, it had an expiration date of August, 2025. Check the current license status of Irwin Contracting Inc with the New York City Department of Buildings
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 14040 |
| Status | Active |
| County | Suffolk County |
| Type | H H1 - Gc |
- When BuildZoom last verified this license, it had an expiration date of March, 2015. Check the current license status of Irwin Contracting Inc with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 48816 |
| Status | Active |
| County | Suffolk County |
| Type | H H1 - Gc |
- When BuildZoom last verified this license, it had an expiration date of August, 2017. Check the current license status of Irwin Contracting Inc with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | H04453300 |
| Status | Active |
| County | Nassau County |
- When BuildZoom last verified this license, it had an expiration date of May, 2015. Check the current license status of Irwin Contracting Inc with the Nassau County Office of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H18H4380000 |
| Status | Inactive |
| County | Nassau County |
| Type | Home Improvement Contractors |
- According to the Nassau County Office of Consumer Affairs, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Irwin Contracting Inc at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H18H43800 |
| Status | Inactive |
| County | Nassau County |
| Type | Home Improvement Contractors |
- According to the Nassau County Office of Consumer Affairs, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Irwin Contracting Inc at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H17568400 |
| Status | Inactive |
| County | Nassau County |
| Type | Home Improvement Contractors |
- According to the Nassau County Office of Consumer Affairs, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Irwin Contracting Inc at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 602094 |
| Status | Inactive |
| State | New York |
| Type | General Contractor Non Registered |
- According to the New York City Department of Buildings, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Irwin Contracting Inc at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Insured
| Insurer | Harleysville Ins Co |
Insured
| Workers Comp Provider | Nysif |
432
Permits
- Building permit records show that Irwin Contracting Inc has worked on 432 permitted projects.
Irwin Contracting Inc Employees
JI
John C Irwin
Pres
JI
John Irwin
Owner