Updated: May 15, 2026
Location and Projects
Address
1200 18th Street NW, Washington, DC, 20036
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Carlsen Contracting Construction
Carlsen Contracting, 1200 18th St NW, Washington, DC (Owned by: Gregory Carlsen) holds a Renovation license and 9 other licenses according to the Environmental Protection Agency license board.
Their BuildZoom score of 92 ranks in the top 32% of 3,403 District of Columbia licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Carlsen Contracting, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Carlsen Contracting Services
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Carlsen Contracting Contact Information
Phone Number: (202) 596-6262
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Address: 1200 18th Street NW, Washington, DC 20036
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Commission of fine arts jurisdiction area new exterior window door shutters on front facade to replace existing exterior window door shutters
Valuation:
N/A
Permit #:
B2409212
Status:
issued
Fee:
$150
Permit Type:
Alteration and re...
Building Type:
N/A
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Carlsen Contracting License info
Verified License
| License # | NAT-103411-4 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Carlsen Contracting at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 410512000045 |
| Status | Active |
| City | District Of Columbia |
| Type | Gen Contr Construction Mngr |
- When BuildZoom last verified this license, it had an expiration date of October, 2023. Check the current license status of Carlsen Contracting with the Department of Consumer and Regulatory Affairs
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 89580 |
| Status | Active |
| State | Maryland |
| Type | Home Improvement |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Carlsen Contracting at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 123255 |
| Status | Active |
| State | Maryland |
| Type | Contractor (Corppart) Home Improvement |
- When BuildZoom last verified this license, it had an expiration date of March, 2015. Check the current license status of Carlsen Contracting with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 89580 |
| Status | Active |
| State | Pennsylvania |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of March, 2015. Check the current license status of Carlsen Contracting with the Pennsylvania Office of the Attorney General
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-103411-3 |
| 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 Carlsen Contracting at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 66002032 |
| Status | Inactive |
| City | District Of Columbia |
| Type | Home Improvement Contractor |
- According to the Department of Consumer and Regulatory 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 Carlsen Contracting at the Department of Consumer and Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 66002033 |
| Status | Inactive |
| City | District Of Columbia |
| Type | Home Improvement Salesman |
- According to the Department of Consumer and Regulatory 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 Carlsen Contracting at the Department of Consumer and Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 420318000076 |
| Status | Inactive |
| City | District Of Columbia |
| Type | Home Improvement Salesman |
- According to the Department of Consumer and Regulatory 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 Carlsen Contracting at the Department of Consumer and Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-103411-2 |
| 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 Carlsen Contracting at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
Carlsen Contracting Employees
CL
Carlsen Contracting Llc
Owner
GC
Gregory Carlsen
Owner
GC
Gregory David Carlsen