[Amended 9-8-2020 by Ord. No. 20-17]
As part of any change in a nonconforming use, and as part of any alteration, addition or expansion of a nonconforming building or structure, a property owner shall be required to bring the following site conditions into conformity with the requirements of this chapter: off-street parking, landscaping, perimeter buffer, screening, stormwater management, public frontage elements, private frontage elements, and signage.
A. 
Off-street parking, landscaping, perimeter buffers, signage and screening.
(1) 
Expansion of 50% or less of gross square footage over five years expansions in any continuous five-year period, which result in a 50% or less increase in the gross square footage of the existing structure (measured at the beginning of the five-year period), require that a corresponding percentage of the off-street parking, landscaping, perimeter buffer, screening, public frontage elements, private frontage elements, and stormwater management standards of this chapter be installed or upgraded on the site, until the site achieves 100% compliance.
(For example, if the addition is 25% of the area of the existing structure and the site contains only 50% of the required landscaping, 25% of the required landscaping for the entire site must be provided, thereby bringing the landscaping on the site to 75% of the total required.)
Existing landscaping on the site shall be retained or replaced but shall not count toward the required percentage of new landscaping.
(2) 
Expansion of greater than 50% of gross square footage over five years. Expansions over any continuous five-year period, which result in a greater than 50% increase of the gross square footage of the existing structure (measured at the beginning of the five-year period), require the entire property to meet all of the off-street parking, landscaping, perimeter buffer, screening, public frontage elements, private frontage elements, and signage standards of this chapter.
B. 
Physically constrained properties- comply to maximum extent practicable. Lands that are physically constrained (due to limited size, topography, or other environmental considerations) from complying with these provisions shall comply, to the maximum extent practicable, as determined by the Zoning Administrator.
C. 
Addition of outdoor storage area only. When only outdoor operations/storage/display areas are being added or increased on a site, the percentage increase in outdoor operations area shall require a corresponding percentage increase in perimeter buffers and screening. Perimeter buffer and screening augmentation shall be located so as to achieve the performance objectives in § 72-55, Landscaping, with priority given to screening the impacts of outdoor operations.