Updated: May 20, 2026
Location and Projects
Address
18 Flax Pond Woods Rd, East Setauket, NY, 11733
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Callahan Construction Inc
Callahan Construction Inc, 18 Flax Pond Woods Rd, East Setauket, NY (Owned by: Michael Callahan) holds a Home Improvement Contractors license and 7 other licenses according to the Nassau County license board.
Their BuildZoom score of 92 ranks in the top 32% of 77,888 New York licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Callahan Construction Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Callahan Construction Inc Services
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Callahan Construction Inc Contact Information
Phone Number: (631) 697-1719
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Address: 18 Flax Pond Woods Rd, East Setauket, NY 11733
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Building Permits by Callahan Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Variance construct 2 story 1 family dwelling due to hurricane sandy 059-ha-2002-2013
Valuation:
$189,000
Permit #:
201308972
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct partial 2nd fl - interior alterations on 1st fl & air conditioning unit
Valuation:
$78,000
Permit #:
201704110
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct garage conversion & interior alterations to ground level
Valuation:
$25,000
Permit #:
201708111
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct rear addition and second floor addition w interior alterations
Valuation:
$78,000
Permit #:
201416179
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct second story rear addition - 2nd fl & front addition
Valuation:
$93,000
Permit #:
201214503
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 1 story rear addition
Valuation:
$25,000
Permit #:
200904603
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Callahan Construction Inc License info
Verified License
| License # | 199261 |
| 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 Callahan Construction 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 # | 199261 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- When BuildZoom last verified this license, it had an expiration date of November, 2024. Check the current license status of Callahan Construction Inc with 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 # | H18E7400000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- When BuildZoom last verified this license, it had an expiration date of November, 2024. Check the current license status of Callahan Construction Inc with 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 # | 28884 |
| Status | Active |
| County | Suffolk County |
| Type | H H1 - Gc |
- When BuildZoom last verified this license, it had an expiration date of May, 2014. Check the current license status of Callahan Construction Inc with the Suffolk County Department of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
Unverified License
| License # | H18E7400000 |
| Status | Unable To Verify |
| County | Nassau County |
| Type | Home Improvement Contractors |
- BuildZoom was not able to verify this license with the licensing board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-20969-3 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- According to the United States Environmental Protection Agency, 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 Callahan Construction Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H18E74000 |
| 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 Callahan Construction 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 # | NAT-20969-2 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- According to the United States Environmental Protection Agency, 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 Callahan Construction Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
6
Permits
- Building permit records show that Callahan Construction Inc has worked on 6 permitted projects.
Callahan Construction Inc Employees
CN
Christopher K Nelson
President
MC
Michael Callahan
Pres
MC
Michael Callahan
Owner