Boulder, CO Fire Regulations: Fire Pits & Backyard Fires (2026)
Fire pit rules in Boulder, CO, also called outdoor burning, recreational fire, or open flame ordinances, cover fuel types, clearances, and when burning is allowed.
Key Facts
- Governing section
- Fire Code § 307 (BRC 10-8-2(b)(13))
- Portable fire pits
- Prohibited citywide, § 307(2)
- Permanent fireplace
- Allowed if built to Boulder Building Code
- Ceremonial fire pit depth
- 3 ft deep, up to 10 ft diameter
- Wind cutoff
- Must extinguish above 15 mph
- Ceremonial fire permit
- Required from Boulder Fire Rescue
Summary
Boulder bans mobile and portable outdoor fireplaces, the store-bought steel bowl or basket fire pit, everywhere in the city under Fire Code § 307(2). A recreational fire is only legal in an exterior fireplace built to the City of Boulder Building Code, or as a permitted 'ceremonial fire' contained in a code-defined ceremonial fire pit or chantico, with a charged garden hose on hand and a 15 mph wind cutoff.
Ceremonial Fire Pit is a three-foot-deep pit that does not exceed ten feet in diameter with a twenty-four-inch horseshoe shaped berm void of vegetation. A five-foot buffer zone surrounds the berm and is clear of vegetation and/or other combustibles. ... No person shall kindle or maintain outside of a habitable building or outside of an exterior fireplace built in accordance with the City of Boulder Building Code any bonfire or burn...except when:...(e)The burning is part of a "ceremonial fire" where all the following are met:1.A permit must be obtained from Boulder Fire Rescue Department;2.Fire must be contained in a ceremonial fire pit or a ceremonial chantico;3.A water source with a garden hose attached and charged must be readily available and can reach all parts of the ceremonial fire;4.Ceremonial fire must be extinguished if winds exceed 15 mph...(2)Mobile or portable type outdoor fireplaces are prohibited to use within the city limits or anywhere on city property outside of the city limits.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 167 Update 3).
Full Breakdown
Boulder's Fire Code treats casual backyard fire pits far more strictly than most Front Range cities. Section 307, reenacted at BRC 10-8-2(b)(13), bars kindling or maintaining any bonfire outside a habitable building unless it's inside 'an exterior fireplace built in accordance with the City of Boulder Building Code,' meaning a permanent, permitted structure rather than a portable unit. Subsection (2) makes the point explicit: mobile or portable type outdoor fireplaces are prohibited to use within the city limits or anywhere on city property outside the city limits, with no exception for a single-family backyard.
The one path to a legal, controlled recreational-style fire on private property is the 'ceremonial fire' exception at 307(1)(e), which comes with five conditions: a permit from Boulder Fire Rescue Department; the fire contained in a 'ceremonial fire pit' or 'ceremonial fire chantico'; a charged garden hose immediately available and able to reach the fire; the fire extinguished if winds exceed 15 mph; and compliance with all state and county air-quality and burn-restriction rules. Chapter 2's amended definitions, adopted at 10-8-2(b)(10), spell out the dimensions: a ceremonial fire pit is a three-foot-deep pit no more than ten feet in diameter, ringed by a 24-inch horseshoe-shaped berm clear of vegetation, with a five-foot buffer zone around the berm also kept clear of vegetation and combustibles.
A chantico is a three-sided masonry or block structure, covered on top, with a chimney at least two feet tall fitted with a spark arrestor.
Violations & Fines
Using a portable fire pit, or any recreational fire that doesn't qualify under the exterior-fireplace or permitted ceremonial-fire exceptions, is enforced under the Fire Code's general violation and penalty framework incorporated at BRC 10-8-2: Boulder Fire-Rescue can issue a civil penalty starting at $150 for a first offense and rising to $1,000 for a third, order the fire extinguished on the spot, and refer repeat or hazardous violations for criminal prosecution in municipal court.
Frequently Asked Questions
Can I use a portable fire pit in my Boulder backyard?
What counts as a legal ceremonial fire pit in Boulder?
Is a built-in gas fire pit allowed on my Boulder patio?
Sources & Official References
Other rules in Boulder
How Boulder compares: Cities with the Strictest Fire Pit Rules·Compare Boulder to another location·View the Colorado fire regulations overview
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