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Arapahoe County, CO Fire Regulations: Wildfire Zones (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified April 2026

Key Facts

Zone 1
0-5 ft non-combustible
Zone 2
5-30 ft lean and clean
Zone 3
30-100 ft reduced fuel
State Law
HB 22-1007 risk mapping
Fire Districts
South Metro, Cunningham

Summary

Arapahoe County's western foothills and Cherry Creek drainage are in designated Wildland-Urban Interface zones. Defensible space (100-foot reduced-fuel zone) is required per local fire protection districts. IBHS/NFPA standards apply for new construction in high-risk areas.

City-specific rules exist: Centennial has its own wildfire zones rules that differ from Arapahoe County's county-level regulations. If you live in Centennial, check the city-specific page instead.

The act establishes the wildfire mitigation resources and best practices grant program (grant program) within the Colorado state forest service (forest service). To be eligible to receive a grant, a recipient must be an agency of local government, a county, a municipality, a special district, a tribal agency or program, or a nonprofit organization. The forest service is tasked with reviewing grant applications. Grants must be awarded only to applicants proposing to conduct outreach among landowners in high wildfire hazard areas, and the forest service must consider the potential impact of an applicant's proposed outreach when awarding grants. The forest service must report to the wildfire matters review committee on the grant program. Commencing no later than the 2023-24 state fiscal year, the act requires the general assembly to annually appropriate money from the general fund to the healthy forests and vibrant communities fund to implement the grant program. The act extends the existing income tax deduction created to offset the landowner's costs incurred in performing wildfire mitigation measures, currently set to expire with the 2024 income tax year, through the 2025 income tax year. The act also creates a state income tax credit to reimburse a landowner for the costs incurred in performing wildfire mitigation measures on the landowner's property. Specifically, a landowner with a federal taxable income at or below $120,000, annually adjusted for inflation and rounded to the nearest hundred dollars, for any income tax year commencing on or after January 1, 2023, but prior to January 1, 2026, is allowed a state income tax credit in an amount equal to 25% of up to $2,500 in costs for wildfire mitigation measures.

Source: Colorado HB 22-1007View official code

Full Breakdown

Although much of Arapahoe County is prairie and suburban, the western edge near Cherry Creek State Park and the county's mountain parks (Roxborough area in neighboring counties) carry wildfire risk. South Metro Fire Rescue, Cunningham Fire, and Littleton Fire Rescue serve most unincorporated areas and enforce defensible space. Colorado HB 22-1007 requires local fire districts to conduct WUI risk mapping. Best-practice defensible space: Zone 1 (0-5 feet) non-combustible, Zone 2 (5-30 feet) lean and clean (trimmed grass, spaced shrubs, no wood mulch within 5 feet), Zone 3 (30-100 feet) reduced fuel (thinned trees, ladder fuels removed). Colorado's 2018 IBC/IRC with local amendments requires Class A roofing assemblies in designated WUI zones, ember-resistant vents (1/8-inch mesh), enclosed eaves, and non-combustible siding within specified WUI-mapped areas. Seasonal Stage 1/Stage 2 fire restrictions may ban open burning, outdoor smoking, and fireworks countywide during drought conditions. HOA rules often supplement state and county defensible space standards.

Violations & Fines

Fire district defensible space orders: 30-60 days to comply. Non-compliance: citations $100-$1,500. Operating during fire restrictions: Class 2 petty offense up to $300 fine plus civil liability for fire suppression costs. Insurance cancellation risk (Colorado FAIR Plan may be required).

Frequently Asked Questions

Am I required to create defensible space in Arapahoe County?
In WUI zones (western foothills, Cherry Creek drainage), yes. Local fire protection districts enforce defensible space. In prairie and suburban zones it is strongly recommended.
Who enforces fire restrictions in Arapahoe County?
The Sheriff's Office in coordination with local fire protection districts. Stage 1 and 2 restrictions are declared by the Sheriff during high fire danger.

Sources & Official References

Other rules in Arapahoe County

All Arapahoe County rules

Compare Arapahoe County to another location·View the Colorado fire regulations overview

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Wildfire Zones in Cities Across Arapahoe County