permit
Arapahoe County residential solar permitting
Arapahoe County (unincorporated) handles residential solar permits through the county building division. Aurora, Centennial, and Littleton are separate jurisdictions.
Residential solar in unincorporated Arapahoe County goes through the county building department. Aurora, Centennial, and Littleton residents should confirm with their city building department instead.
Last reviewed: 7/6/2026