The impact fee ordinance establishes an infrastructure impact zone which zone is the same as the existing corporate boundaries of the Town of St. John. This zone may be extended from time to time through annexation and over which the Town of St. John exercises planning and zoning jurisdiction. The impact fee ordinance applies uniformly to all residential developments in the Town of St. John in which the Town requires a structural building permit. The impact fee ordinance specifically does not apply to improvements that do not require a structural building permit; improvements which do not create a need for new and additional infrastructure, including the erection of a sign, construction of accessory buildings, structures or fences or the alteration, renovation, or expansion of an improvement where the use or intensity thereof has not changed; the replacement of a destroyed or partially destroyed improvement; provided, that the replacement improvement does not create a need for new and additional infrastructure over and above the infrastructure needed by the original improvement prior to the destruction or partial destruction thereof; and nonresidential development.