These regulations shall apply to the subdividing of all land within the unincorporated territory of the county, except for the property within one mile outside the limits of an incorporated city, city approval of subdivision plats within one mile of the city limits shall be in addition to county approval, or as mutually defined by both city and county under the requirements of Idaho Code section 50-1306, as amended or subsequently codified, and except as provided by Idaho Code section 31-3803. (Ord. 09-09, 10-6-2009)