When any of the following improvements are made to an existing development, such improvements shall comply with this chapter, whether or not the existing development has received a prior approval pursuant to Section 1048.06.
   (a)   Floor area expansion: The gross floor area of a structure is expanded by more than ten percent or more than 4,000 square feet, whichever is less. Repeated expansions of a development constructed over a period of time commencing with the effective date of this chapter shall be combined in determining whether the threshold has been reached.
   (b)   Use change: The use of a development changes to a more intense classification.
   (c)   Site alteration: A site alteration activity requires the submission of a development plan or an amended development plan and involves ten percent or more of the site area.
   (d)   Reconstruction: A structure is reconstructed following substantial destruction by fire or other calamity. A structure is considered substantially destroyed if the cost of reconstruction is fifty percent or more of the fair market value of the structure before the calamity.
(Ord. 11-01. Passed 8-21-01; Ord. 16-2019.  Passed 12-17-19.)