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The Fire Prevention Division manages the City and County of Denver ’s program of Fire Safety Permits.
A Fire Safety Permit is an official document, issued in the name of the Fire Official, that authorizes the performance of a certain activity (use, handling, storage, manufacturing, occupancy or control of specific hazardous operations and conditions). The permit is issued only if the condition meets code requirements. The permit process includes cross-checking with Development Services, Public Health and other agencies to ensure that those agencies’ requirements are also being observed.
There is a charge for permits; see Permit Fee Table.  In almost every case, there is an on-site inspection at no extra charge.

There is a separate unit in Fire Prevention that manages assembly occupancies and special events.

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

Please contact:

Fire Prevention Division,  Assembly Group
745 West Colfax Ave., 2nd Floor
Denver, CO 80204

Permit Hours: Monday - Friday
7:00 a.m. - 9:30 a.m.

View Permit Fee Table

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








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
For more information, please contact Capt. Steven Holtz (720-913-3448;

If you are planning to hold an event, please complete the Special Event Permit Application below and fax to the Fire Prevention office at 720-913-3596.  For information on fees for special events please refer to the Permit Fee Table.


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.


Our staff is comprised of:

  • Fire Inspectors--seasoned firefighters, trained and certified by the National Fire Protection Association to the highest level (Fire Inspector 2).
  • Fire Protection Engineers--engineers registered and licensed by the State of Colorado with expertise in Fire Protection Engineering, who provide technical support to our staff and the entire Denver Fire Department.
  • Clerical Staff--a small but dedicated cadre that keeps everything running on time and on budget.

For more information about Fire Prevention, please view our Frequently Asked Questions guide.

For questions please feel free to contact us at:

Fire Prevention Unit
720-913-3474 or