Building Setbacks & Zoning in Arapahoe County, CO (2026)

3 rules for unincorporated Arapahoe County, Colorado.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Arapahoe County. If you live within an incorporated city, that city's own rules apply — see the city list below.

Setback Rules

Arapahoe County Land Development Code §3-2 establishes setbacks by zoning district. R-1: 25 ft front, 7 ft side, 25 ft rear. Aurora City Code and Centennial Municipal Code set similar standards. Cherry Hills Village mandates substantially larger setbacks (50+ ft front) preserving semi-rural character.

building-setbacks/setback-rules

Some Restrictions

Full ordinance details →Official source ↗

Structure Height Limits

Arapahoe County residential zones typically limit structures to 35 feet or 2.5 stories per Land Development Code §3-2. Aurora UDO §146-4 follows 35 ft residential standard. Cherry Hills Village restricts to 32 ft to preserve view corridors. DIA flight-path zones impose additional FAA Part 77 height limits.

building-setbacks/structure-height-limits

Some Restrictions

Full ordinance details →Official source ↗

Lot Coverage Limits

Arapahoe County Land Development Code §3-2 limits lot coverage: R-1 typically 35%, R-2 40%, R-A (rural) 20%. Aurora UDO §146-4 limits R-1 to 40% coverage. Cherry Creek watershed properties face additional impervious surface limits. Stormwater management triggered at 50%+ impervious.

building-setbacks/lot-coverage

Some Restrictions

Full ordinance details →Official source ↗

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