Location
Jf Brennan Company Construction
J.F. Brennan Company Inc., based in La Crosse, Wisconsin, is a family-owned marine construction firm that has served clients nationwide since 1919. The company specializes in marine construction, environmental remediation, dam construction, commercial diving, harbor management, and submarine cable services. Brennan works closely with both public and private owners of water-based infrastructure on coastal and inland waterways across the country. With over a century of experience, Brennan manages large-scale projects such as moving millions of tons of commodities every year and addressing complex maritime and environmental challenges. The company holds certifications in ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health and Safety Management), and is approved for safety-related work under ASME NQA-1 (2022) and several federal standards. Brennan’s operational methods emphasize rigorous safety protocols and total quality management, defining their approach as the “Brennan Way,” with a focus on innovation, performance, and continual improvement.
Jf Brennan Company Inc Services
Jf Brennan Company Inc Contact Information
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Similar Contractors See more
Jf Brennan Company Inc Reviews
Recent Buildzoom Projects
Hiring a contractor?
Jf Brennan Company Inc License info
Verified License
| License # | 177099 |
| Status | Active |
| State | Alaska |
| Type | Construction Contractors |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Jf Brennan Company Inc at the Alaska Division of Corporations, Business and Professional Licensing.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | JFBREFB857PM |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Jf Brennan Company Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 48244 |
| Status | Active |
| State | Louisiana |
| Type | Heavy Construction |
| Class | Commercial License Certificate |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Jf Brennan Company Inc at the Louisiana Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 35996-25 |
| Status | Active |
| State | Nebraska |
| Type | Contractor |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Jf Brennan Company Inc at the Nebraska Department of Labor.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 42354 |
| Status | Active |
| State | Alabama |
| Type | General Contractors |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Jf Brennan Company Inc at the Alabama Licensing Board for General Contractors.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | C098566 |
| Status | Active |
| State | Iowa |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of June, 2026. Check the current license status of Jf Brennan Company Inc with the Iowa Workforce Development Agency
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | R9199 |
| Status | Active |
| City | Duluth |
- When BuildZoom last verified this license, it had an expiration date of December, 2024. Check the current license status of Jf Brennan Company Inc with the The City of Duluth, MN
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 59523 |
| Status | Active |
| State | Tennessee |
| Type | Contractors |
- When BuildZoom last verified this license, it had an expiration date of October, 2015. Check the current license status of Jf Brennan Company Inc with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 45141 |
| Status | Active |
| State | North Dakota |
| Type | Corporation |
| Class | Class A - Unlimited contract amount |
- When BuildZoom last verified this license, it had an expiration date of October, 2015. Check the current license status of Jf Brennan Company Inc with the North Dakota Secretary of State
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0200530411 |
| Status | Active |
| State | Arkansas |
| Type | Foundation Construction Or Drilling, Pile Driving, Stabilization, Railroad Construction, Related Ite |
- When BuildZoom last verified this license, it had an expiration date of April, 2016. Check the current license status of Jf Brennan Company Inc with the Arkansas Contractors Licensing Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0200530424 |
| Status | Inactive |
| State | Arkansas |
| Type | Concrete, Demolition, Blasting, Demolition, Dredging, Erosion Control, Foundation Construction Or Drilling, Pile Driving, Stabilization |
- According to the Arkansas Contractors Licensing Board, 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 Jf Brennan Company Inc at the Arkansas Contractors Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0200530423 |
| Status | Inactive |
| State | Arkansas |
| Type | Concrete, Demolition, Blasting, Demolition, Dredging, Erosion Control, Foundation Construction Or Drilling, Pile Driving, Stabilization |
- According to the Arkansas Contractors Licensing Board, 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 Jf Brennan Company Inc at the Arkansas Contractors Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0200530422 |
| Status | Inactive |
| State | Arkansas |
| Type | Concrete, Demolition, Blasting, Demolition, Dredging, Erosion Control, Foundation Construction Or Drilling, Pile Driving, Stabilization |
- According to the Arkansas Contractors Licensing Board, 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 Jf Brennan Company Inc at the Arkansas Contractors Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0200530421 |
| Status | Inactive |
| State | Arkansas |
| Type | Concrete, Demolition, Blasting, Demolition, Dredging, Erosion Control, Foundation Construction Or Drilling, Pile Driving, Stabilization |
- According to the Arkansas Contractors Licensing Board, 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 Jf Brennan Company Inc at the Arkansas Contractors Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0200530420 |
| Status | Inactive |
| State | Arkansas |
| Type | Concrete, Demolition, Blasting, Demolition, Dredging, Erosion Control, Foundation Construction Or Drilling, Pile Driving, Stabilization |
- According to the Arkansas Contractors Licensing Board, 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 Jf Brennan Company Inc at the Arkansas Contractors Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0200530419 |
| Status | Inactive |
| State | Arkansas |
| Type | Concrete, Demolition, Blasting, Demolition, Dredging, Erosion Control, Foundation Construction Or Drilling, Pile Driving, Stabilization |
- According to the Arkansas Contractors Licensing Board, 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 Jf Brennan Company Inc at the Arkansas Contractors Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 79034 |
| Status | Inactive |
| State | North Carolina |
- According to the North Carolina Licensing Board for General Contractors, 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 Jf Brennan Company Inc at the North Carolina Licensing Board for General Contractors.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0200530418 |
| Status | Inactive |
| State | Arkansas |
| Type | Concrete, Demolition, Blasting, Demolition, Dredging, Erosion Control, Foundation Construction Or Drilling, Pile Driving, Stabilization, Railroad Construction, Related Items |
- According to the Arkansas Contractors Licensing Board, 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 Jf Brennan Company Inc at the Arkansas Contractors Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1506133 |
| Status | Inactive |
| State | Florida |
| Type | Certified General Contractor |
- According to the Florida Department of Business & Professional Regulation, 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 Jf Brennan Company Inc at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
Insured
| Insurer | Travelers Indemnity Company Th |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Liberty Mutual Ins Co |
| Bond Value | $12,000 |