A site development plan shall be required for the following development proposals:
A. All new nonresidential development and redevelopment that involves a new building that requires a building permit; alters the exterior configuration of the water, sewer, or stormwater system of the site; converts open space or vacant land; or converts parking areas that are required to meet minimum parking standards pursuant to this title to other uses.
B. All new residential development for four or more dwelling units, where a division of land pursuant to the regulations of Chapter 14.215 SMC is not proposed.