(4)   Height Regulations.
(a)   There are no height restrictions in the SP-CIV district, except as limited by the other provisions of this Zoning Code, including § 14-409(4)(b), below.
(b)   If an SP-CIV-zoned lot is adjacent to a lot in a Residential district, the maximum permitted building height for a portion of a building in the SP-CIV district located within 50 ft. of that residential lot line shall be 20 ft. greater than the maximum permitted building height in the most restrictive Residential district adjacent to that portion of the lot.