Nonconforming uses shall be allowed to continue and expand in accordance with chapter 17.52 of this title. Establishment of permitted or conditional uses on properties that are nonconforming in relation to building or parking setback, landscaping, or other site development standards shall not be required to bring the site into conformance with the standards of this chapter until the cost of improvements or renovations to a property or site exceeds fifty percent (50%) of the assessed value of the buildings on the property. Applications for renovations or improvements to properties that are nonconforming in relation to development standards shall include a calculation of the cost of the improvements. (Ord. 21-21: Ord. 19-40)