Boulder, CO Outdoor Cooking: BBQ & Propane Rules (2026)

Boulder Revised Code Title 10 Chapter 8 (BRC 10-8-2) adopts the International Fire Code by reference, with local amendments. IFC 308.1.4 controls open-flame cooking on or near combustible construction in apartments, condos, and similar Group R-1 and R-2 occupancies: no charcoal burner, gas grill, or other open-flame device may be operated on combustible balconies or within 10 feet of combustible construction. Three exceptions apply: (1) one- and two-family dwellings (R-3), so single-family backyard grilling is generally permitted; (2) buildings or balconies protected by an automatic sprinkler system covering the balcony area; and (3) LP-gas devices with a container of no more than 2.5 lbs water capacity (the 1-pound camping cylinder). Boulder Fire-Rescue actively enforces this rule against student rentals in the University Hill, Goss-Grove, and Martin Acres neighborhoods. Penalties are unusually steep: BRC 5-2-4 allows fines up to $1,000 per day of violation plus up to 90 days in jail per offense — Boulder Fire-Rescue publicly cites the example that a 30-day continuing violation can theoretically reach $30,000. Storage of LP-gas cylinders larger than 1 lb on multifamily balconies is also barred. Inside the expanded Wildland-Urban Interface (16,000 homes as of Aug. 1, 2025), additional ignition-resistant construction and clearance standards apply, but the 308.1.4 rules are the day-to-day enforcement vehicle. Boulder routinely issues Stage 1 and Stage 2 fire restrictions during summer drought; Stage 2 can ban charcoal use even in single-family backyards.