Any change to the exterior of a building, structure, object, site, or area. Alteration shall include, but is not limited to, changing to a different kind, type, or size of roofing or siding materials; changing, eliminating, or adding exterior doors, door frames, windows, window frames, shutters, fences, railing, columns, beams, walls, porches, steps, porte-cocheres, balconies, or ornamentation; or the dismantling, moving, or removing of any exterior features. Alteration does not include ordinary maintenance or repair.