1161.02 APPLICABILITY.
   With the exception of individually platted single-family and two-family dwellings, this Chapter shall apply to new development and any collective substantial expansion or improvements of existing structures involving:
   (a)    New platted subdivisions and planned unit developments;
   (b)    Any land dedicated for a park or public open space;
   (c)    Any new land use which involves the preparation of a site plan pursuant to Chapter 1132.
   (d)    Substantial improvements to existing land uses, but only to the extent of the alteration or expansion, and not for the entire property, unless the alteration or expansion is substantial. An alteration or expansion to an existing building or structure shall be deemed substantial based on the following criteria:
 
When Existing
Structure is.....
A Substantial
Expansion is........
0 - 1,000 sq. ft.
50% or greater
1,001 - 10,000 sq. ft.
40% or greater
10,001 - 25,000 sq. ft.
30% or greater
25,001 - 50,000 sq. ft.
20% or greater
50,001 sq. ft. and larger
10% or greater