Updated: Nov 21, 2025
Location and Projects
Address
1247 Montauk Highway, Copiague, NY, 11726
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Sierra Remodeling Corp
Sierra Remodeling Corp, 1247 Montauk Hwy, Copiague, NY (Owned by: Gregory Koharek) holds a Home Improvement Contractors license and 3 other licenses according to the Nassau County license board.
Their BuildZoom score of 85 does not rank in the top 50% of New York contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Sierra Remodeling Corp, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Sierra Remodeling Corp Services
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Sierra Remodeling Corp Contact Information
Phone Number: (516) 796-5447
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Address: 1247 Montauk Highway, Copiague, NY 11726
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Building Permits by Sierra Remodeling Corp
This is a sample of this contractor's permits. Click here to access their complete permit history.
Variance construct one story addition as per bza grant with emergency hurricane sandy repairs - interior alteration - gyp. bd. - insul. - heating equipment - kitchen and bathroom 059-ha-558-13 059-ha-45899-2013
Valuation:
$21,000
Permit #:
201202298
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repair fire damage & construct 2nd fl addition in excess of 50% new co req
Valuation:
$217,000
Permit #:
201704320
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 2nd fl addition - interior alterations & fill in basement crawl space due to hurricane sandy 059-ha-47657-2013
Valuation:
$54,000
Permit #:
201313242
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct two story addition & full dormer
Valuation:
$150,000
Permit #:
201107464
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Variance construct 2nd story addition - 1 story addition - alterations & roof over porch per bza grant
Valuation:
$58,000
Permit #:
201110974
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct second floor addition with bathroom - roof over entry and porch - raised wood deck ( surveyor letter required upon framing inspection to verify ridge height )
Valuation:
$75,000
Permit #:
201000536
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct front porch - 2nd fl addition & attached garage
Valuation:
$82,000
Permit #:
201702511
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct second floor addition and rear roof over to one family dwelling only
Valuation:
$141,000
Permit #:
201414824
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct first and second floor additions with bathroom front roof at entry and boiler room
Valuation:
$118,000
Permit #:
201201888
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 2nd floor addition w bathroom & front porch
Valuation:
$884,000
Permit #:
200802089
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct one story rear addition - relocate kitchen - rear dormer with bathroom and two doghouse dormers
Valuation:
$80,000
Permit #:
201106419
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 2nd floor addition & front roof over
Valuation:
$90,000
Permit #:
201703443
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct additions and alterations in excess of 50% new c.o. required
Valuation:
$190,000
Permit #:
201103470
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct masonry extension to existing building
Valuation:
$25,000
Permit #:
200800500
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 2nd floor addition & roof over porch
Valuation:
$72,000
Permit #:
201706408
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 2nd story addition and rear 2nd story deck
Valuation:
$115,000
Permit #:
201607885
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 2nd floor bathroom dormer and 1 story rear addition
Valuation:
$56,000
Permit #:
201607544
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Const new 2nd fl addition w/bath & 1st fl int alts w/gar conversion to living space
Valuation:
$95,000
Permit #:
201211157
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct partial 2nd floor addition w/interior alterations to 2nd fl
Valuation:
$71,000
Permit #:
201512959
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 2nd floor addition
Valuation:
$54,000
Permit #:
201310278
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Sierra Remodeling Corp License info
Verified License
| License # | H18A9070000 |
| 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 Sierra Remodeling Corp 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 # | 27170 |
| Status | Active |
| County | Suffolk County |
| Type | H H1 - Gc |
- When BuildZoom last verified this license, it had an expiration date of June, 2018. Check the current license status of Sierra Remodeling Corp 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 # | H18A9070000 |
| 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 Sierra Remodeling Corp 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 # | H18A90700 |
| 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 Sierra Remodeling Corp at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
85
BuildZoom Score
218
Permits
- Building permit records show that Sierra Remodeling Corp has worked on 218 permitted projects.
Sierra Remodeling Corp Employees
CK
Cheryl Koharek
Secretary
GK
Gregory Koharek
Pres
GK
Gregory Koharek
Owner
GM
Grzegorz Malachowski
Vice Pres
We had them dormer our home two year ago.We had no issues and worked with Greg who was on site to oversee the workers.Very pleased.