Updated: Jul 04, 2026
Location and Projects
Address
18 Guenter Street, Butler, NJ, 07405
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Sylwester P Janezko HVAC/Mechanical Contractor
Sylwester P Janezko, 18 Guenter St, Butler, NJ holds a Hvacr Contractor license and 1 other license according to the New Jersey license board.
Their BuildZoom score of 91 ranks in the top 37% of 88,231 New Jersey licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Sylwester P Janezko, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Sylwester P Janezko Contact Information
Address: 18 Guenter Street, Butler, NJ 07405
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Rip off and reroof
Valuation:
N/A
Permit #:
020731
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
5 fence 4 high 50% open
Valuation:
N/A
Permit #:
092015
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Dormer
Valuation:
N/A
Permit #:
043175
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
943218
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
093326
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
043175-1
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
043175+A
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Sylwester P Janezko License info
Verified License
| License # | 19HC00515600 |
| Status | Active |
| State | New Jersey |
| Type | Hvacr Contractor |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Sylwester P Janezko at the New Jersey Department of Law & Public Safety.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 19HC00515600 |
| Status | Active |
| State | New Jersey |
| Type | Hvacr Contractor |
- When BuildZoom last verified this license, it had an expiration date of June, 2024. Check the current license status of Sylwester P Janezko with the New Jersey Department of Law & Public Safety
This is a sample of licensing data; click here to access a complete history.