Updated: Nov 20, 2025
Location and Projects
Address
900 Marconi Avenue, Ronkonkoma, NY, 11779
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Cedar Knolls Construction
Cedar Knolls Inc, 900 Marconi Ave, Ronkonkoma, NY (Owned by: Howard Kipnes) holds a Home Improvement Contractors license and 3 other licenses according to the Nassau County license board.
Their BuildZoom score of 93 ranks in the top 27% of 77,888 New York licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Cedar Knolls Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Cedar Knolls Inc Services
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Cedar Knolls Inc Contact Information
Phone Number: (631) 231-1518
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Address: 900 Marconi Avenue, Ronkonkoma, NY 11779
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Repair storm sandy 059-ha-5947-2013 construct 1 family dwelling attic to remain unfinished scuttle to only
Valuation:
$307,000
Permit #:
201312877
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P085226
Status:
issued
Fee:
$303,420
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P081059
Status:
issued
Fee:
$260,240
Permit Type:
N/A
Building Type:
N/A
Install modular 2nd story on existing dwelling & front roof over n.y.s.#m0659-2010-118
Valuation:
$125,000
Permit #:
201500977
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P074629
Status:
issued
Fee:
$379,050
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P069684
Status:
complete
Fee:
$673,800
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P069061
Status:
complete
Fee:
$537,680
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P075973
Status:
issued
Fee:
$75,000
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P073558
Status:
complete
Fee:
$75,000
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P074013
Status:
complete
Fee:
$30,000
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P073717
Status:
complete
Fee:
$45,000
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P069367
Status:
complete
Fee:
$15,000
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P068808
Status:
complete
Fee:
$15,000
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
P071632
Status:
complete
Fee:
$10,000
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Cedar Knolls Inc License info
Verified License
| License # | H0442980000 |
| 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 Cedar Knolls 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 # | 33260 |
| Status | Active |
| County | Suffolk County |
| Type | H H1 - Gc |
- When BuildZoom last verified this license, it had an expiration date of May, 2015. Check the current license status of Cedar Knolls Inc with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H04429800 |
| 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. If this is your business, please update your license status.
Check this license's status for Cedar Knolls 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 # | L003617 |
| Status | Inactive |
| Town | Town Of Southampton |
- According to the Town of Southampton Department of Land Management, 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 Cedar Knolls Inc at the Town of Southampton Department of Land Management.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
10
Permits
- Building permit records show that Cedar Knolls Inc has worked on 10 permitted projects.
Cedar Knolls Inc Employees
HK
Howard Kipnes
Owner
HK
Howard M Kipnes
Pres