Boulder County, CO Fire Regulations: Propane Storage (2026)
Key Facts
- Under 500 gal setback
- 10 ft from buildings/lines
- 501-2,000 gal setback
- 25 ft
- 2,001-30,000 gal setback
- 50 ft
- Vegetation clearance
- 10 ft around tank
- Governing code
- 2021 IFC Section 6104
Summary
Propane/LP-gas tanks in unincorporated Boulder County follow the adopted 2021 International Fire Code. Tanks up to 500 gallons must be at least 10 feet from buildings and property lines; larger tanks need 25-50 feet. Keep vegetation within 10 feet of the tank cleared and never place a tank under a
Keep combustible materials away from propane tanks. Vegetation within 10 feet of the tank must be kept cleared. Don't put the tank directly underneath a tree.
Full Breakdown
Boulder County publication B23 applies IFC Section 6104 clearance requirements. Above-ground tanks up to 500 gallons need a minimum 10-foot separation from buildings and property lines; 501-2,000 gallon tanks need 25 feet; and 2,001-30,000 gallon tanks need 50 feet. Underground tanks require at least 10 feet from buildings or adjoining lot lines at all points. For wildfire safety the county requires keeping combustible materials away, clearing vegetation within 10 feet of the tank, and not placing the tank directly under a tree. Tanks are typically set on a concrete pad.
Violations & Fines
Enforced through building/mechanical permit inspections; noncompliant installations must be corrected before approval.
Frequently Asked Questions
How far must a propane tank be from my house in Boulder County?
Do I need to clear brush around a propane tank?
Sources & Official References
Other rules in Boulder County
Compare Boulder County to another location·View the Colorado fire regulations overview
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