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Fire Safety Operational Permits

The Fire Prevention Division of the Denver Fire Department issues Operational Permits, which allow the applicant to conduct an operation or a business for which a permit is required. 

For these permits:

  • Any special event (carnivals, fairs, exhibits and trade shows, concerts, etc.) may require a permit
  • Ongoing operation of large assembly occupancies, such as theatres and arenas
  • Fireworks and pyrotechnics
  • Parade floats
  • Canopies
  • Storage and use of compressed gases
Special Detail Program:
  • If you are holding a special event The Denver Fire Code requires:
  • Ensuring that exits remain open and unblocked
  • Providing crowd control
  • Acting as liaison to emergency response crews in the event of an emergency incident
  • Supervising pyrotechnics, fog machine, and other special effects to ensure that these operations are done in a safe, code-complying manner
  • For events involving motorized vehicles, monitoring carbon monoxide levels 

Marijuana establishments or businesses involve unique operations which can create significant life safety and fire hazards. As such, all establishments or businesses engaging in these activities shall be required to obtain all applicable annual operational permits from the Denver Fire Department.  All operational permits and (if applicable) construction permits must be obtained prior to an Excise and License Business License inspection sign-off.   

Flammable gas (i.e. Butane) oil extractions, where the gas is released to the atmosphere, are strictly prohibited by the Denver Fire Code.  Violations are subject to criminal penalty including fines and incarceration.    

Below is a pdf flow chart overview of the Denver Fire Department Marijuana permitting process.  (Please click on the chart to enlarge)

Please click below on the general type of permit for more information and where to apply for that type of permit:           

Extraction facilities modifying equipment, solvents, and/ or processes please note the process for review and approval: Extraction Modification Notice

Denver Fire Code and Security Requirements - Marijuana Facilities (PDF)

In general, permits related to new construction (structures) or installation of new safety systems in buildings are issued following plan review in the offices of  Development ServicesDenver’s one-stop Development Review and Permitting Center. Starting at Development Services ensures that your construction project will be reviewed by all the necessary agencies—Building, Zoning, and Fire.
However, when the construction process itself or the structure being built involves hazardous materials, processes or equipment such as emergency generators, you will need to contact our division. Please see the chart below.

New Construction Permits

 For these permits:
Please contact:

Hazardous materials - storage, use or manufacture,  including hazardous operations; process piping related to hazardous operations, radioactive material

Fire Prevention Division -  Hazardous Materials
  745 West Colfax Avenue - First floor
  Denver, CO 80204
Permit hours: Monday - Friday
7:00 a.m. - 9:30 a.m.
Phone: 720-913-3513
Note: Annual HMIS forms are also required; see Hazardous Materials / HMIS.
Storage and use of flammable and combustible 
liquids on the construction site
Fire Prevention  Division -Flammables Unit
  745 West Colfax Avenue - First floor
  Denver, CO 80204
  Permit hours: Monday - Friday
  7:00 a.m. to 9:30 a.m. 
  Phone: 720-913-3518
  Note: Annual HMIS forms also    required;
  see Hazardous Materials / HMIS.
Emergency generator, fuel tanks, 
fire pump fuel tanks
Hot works, tar kettles, etc.
Storage and use of compressed gases on the construction site
Temporary fire standpipes for construction operations
  Denver  Development Services
  Fire Protection Engineering Unit
  Monday - Friday
  7:00 a.m. to 5:00 p.m.
  201 West Colfax Avenue, 2nd floor
  Denver, CO 80202     
Temporary staircase to the highest level of construction at all times
Permit Hours: Monday - Friday
7:00 a.m. - 9:30 a.m.

Operational permits pertain to processes and materials used on a regular basis. In most cases, operational permits must be renewed annually, a renewal fee must be provided and an on-site inspection will be done. 

Annual permits are effective for 12 months from the date of issue unless otherwise stated on the permit. Once you have a permit in place, we will automatically contact you to renew it in subsequent years. Please contact us if there are any changes that would affect the status of your permit (i.e., no longer using a particular hazardous material or process, or starting to use additional ones).

Operational Permits - Commercial or Institutional


For these permits:

Please contact:

Fire Watch

Fire Prevention Division, Permit Section
  745 West Colfax Avenue - First Floor
  Denver, CO 80204
 Permit hours: Monday - Friday
  7:00 a.m. to 9:30 a.m.
  Phone: 720-913-3474

Confined spaces

Occupant load calculations

Hazardous materials - storage, use or manufacture, including hazardous operations; process piping related to hazardous operations, radioactive material

Fire Prevention Division
Hazardous Materials 
Permits and Inspections
  745 West Colfax Avenue - First Floor
  Denver, CO 80204
  Permit hours: Monday - Friday
  7:00 a.m. to 9:30 a.m.
Phone: 720-913-3513 email:
Note: HMIS forms also required; 
see Hazardous Materials / HMIS.

Fumigation / thermal insecticidal fogging

Medical gas systems

Hot works

Fire Prevention Division,  Flammables Unit
 745 West Colfax Avenue - First Floor
  Denver, CO 80204
  Permit hours: Monday - Friday
  7:00 a.m. - 9:30 a.m.
Phone: 720-913-3518
Note: Annual HMIS forms are also required; see Hazardous Materials / HMIS.

Emergency generator


Mobile Retail Food Vendors ( Food Trucks and Carts)

A Mobile Retail Food Vendor is defined as follows: An establishment that sells or serves food to consumers that reports to and operates from a commissary and is readily moveable, such as a truck, trailer, cart or kiosk. Examples include a mobile food truck that travels to different locations, moveable hot dog stand that sets up on a periodic basis, or other food carts or pushcarts that are wheeled and towed to a specific location.

Fire Safety Requirements for Mobile Retail Food Vendors:

The Denver Fire Department is involved in the licensing process by requiring an conducting annual Fire Safety Inspections to ensure compliance with the Denver Fire Code and also by requiring an Operational Permit obtained from the Denver Fire Department for the use of Propane (LPG). Contact the Denver Fire Department Mobiles Inspectors (Info Below) for Policy and Application Information.

Mobile Retail Food Vendor Policy

Denver Fire Department Contact Information:

Phone: 720-913-3474  (Ask for the Food Truck Inspector)


Denver Department of Public Health and Environment

Phone: 720-913-1311


City and County of Denver Business Licensing Center (Step by Step)

Excise and License Retail Mobile Food License Information







E-Permits - Accela Citizen Access

Access E-Permits - Accela Citizen Access to:

  • Apply for Operational Permits issued by Fire Prevention
  • Apply for Conveyance Permits and Submit Documents
  • Pay fees for Operational Permits, Conveyances, and Inspections
  • Review Occupancy Inspection Information 
  • Update contact and account information 
For questions please email: or call: 720-913-3474
For Marijuana Occupancy questions please email:
For Conveyances please email:

Please review our E-Permits - Accela Citizen Access User Guide for information and instructions. 
Payments for Services & Fees

Checks made payable to:

Denver Manager of Finance

You can deliver in person to:
745 West Colfax Avenue - 1st Floor
(receipt will be issued)

Or mail to:
P.O. Box 733422
Dallas, TX 75373-3422

Payment may also be made online by credit card.

You can also call (720) 913-3474 if you have questions regarding making payments.

Contact Us

For questions please contact us at:

Fire Prevention 
720-913-3474 or


Main Office:
745 W. Colfax Ave. 
Phone: 720-913-3474

More Contact Info


Denver Fire Department

Dial 9-1-1 for Emergencies Only
For Non-Emergencies Dial 3-1-1 or 720-913-1311


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