Arapahoe County Land Development Code classifies carports as accessory structures. Permits are required. Setbacks are 5 feet side/rear in most residential zones, maximum height 16 feet, and carports count toward the 30-35% lot coverage maximum.
Arapahoe County LDC Article 3 zoning regulations govern carports as accessory structures. A building permit is required for any carport (attached or detached) over 120 sq ft. Setbacks in R-A (Residential Agricultural) and similar zones are 5 feet from side and rear property lines for detached carports, with attached carports following the primary structure setbacks (typically 5-25 feet front, 7 feet side). Maximum height is 16 feet for detached accessory structures in most residential zones. Carports count toward the maximum lot coverage, typically 30-35% depending on zone. Materials must meet 2018 IRC snow load (30 psf ground snow in most of Arapahoe County) and wind load (115 mph Vult). Pre-fabricated metal carport kits still require engineered drawings if they exceed 120 sq ft. Carports cannot be converted to garages or habitable space without a new building permit. HOAs frequently prohibit fabric or temporary carports.
Unpermitted carports over 120 sq ft: stop-work order, required retroactive permit plus 2x investigation fees ($300-$1,500). Setback or coverage violations: removal or variance required. Temporary fabric carports violating HOA rules: HOA fines applicable.
Arapahoe County, CO
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See how Arapahoe County's carport rules rules stack up against other locations.
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