(A) Grade is the location of the ground surface. For purposes of this chapter, the grade of a building used to determine building height shall be determined by one or more of the following:
(1) Existing grade. The existing elevation of the ground at any point on a lot. Existing grade also may be referred to as natural grade.
(2) Finished grade. The lowest point of elevation of the finished surface of the ground, paving, or sidewalk within the area between the building and the lot line, or when the lot line is more than five feet from the building, between the building and a line five feet from the building.
(3) Reference grade plane. A reference grade plane representing the average of finished ground level adjoining the building at exterior walls. Where the finished ground level slopes away from the exterior walls, the reference grade plane shall be established by the lowest points within the area between the building and the lot line or, where the lot line is more than five feet from the building, between the building and a point five feet from the building.
FIGURE 17.010 (G): REFERENCE GRADE PLANE
(Ord. 885, passed 11-1-2023)