When a tract is subdivided into building lots or parcels greater than 40,000 square feet, such lots or parcels shall be so arranged as to permit replatting, making provisions for the continuation of established street patterns, the opening of future streets and the creation of additional lots with provision for adequate utility services for such replat. [Ord. 3398 § 2, 1999; Code 1970 § 26.16.030.]