Permit Info Catawba County and All surrounding Counties require Accessory Structure Permits for ANY structure OVER 12’x12’x12′! An Accessory Structure Permit is NOT Required by the County for a Carport under 420 square feet, As long as it is not enclosed on the sides or ends! A Zoning Permit is still Required!! All Cities and Counties Require Zoning Permits for ANY Accessory Structure Over 8’x8′! Building-PermitDownload Zoning-PermitsDownload