“Alteration, substantial” means any exterior change or modification through public or private action to a landmark or site of historic interest, substantially affecting the exterior visual qualities of the property excluding ordinary maintenance.

“Landmark” means any improvement, site or natural feature which has been designated by the Planning Commission as appropriate for recognition pursuant to this chapter. Only such exterior elements which are visible from the public right-of-way may be subject to the controls of this chapter.

“Site of historic interest” means any improvement which has been designated as contributing to the historical heritage of Sebastopol and determined to be appropriate for official recognition by the Planning Commission pursuant to this chapter. Only such exterior elements which are visible from the public right-of-way may be subject to the controls of this chapter.

“Substantial adverse change” means any demolition, destruction, relocation, or alteration activities that would impair the significance of a designated resource. (Ord. 1111, 2018)