In the R-1L and R-2 Zones, a bonus of one foot of additional Height may be allowed when an additional foot is added to the average second story side yard setback, to a maximum Height of twenty-six feet. If a structure constitutes a “substantial improvement” as defined by applicable regulations of the Federal Emergency Management Agency, as may be amended from time to time, then Height is measured from Base Flood Elevation plus 1 foot of freeboard pursuant to Section 19.08.240(A). If a structure does not constitute a “substantial improvement” as defined by applicable regulations of the Federal Emergency Management Agency, as may be amended from time to time, then Height is measured from Existing Grade. In no event shall a structure be constructed to a height above twenty-nine feet from Existing Grade as defined in Section 19.08.224. (Ord. 2019-1 § 4, 2019; Ord. 2015-3 Exhibit D, 2015.)