A.
This section is applicable only where a portion of a lot is within an area planned to be part of a future street, alley, or other public right-of-way as determined from an officially adopted plan, and the acquisition of such portion would not reduce the buildable lot width to less than forty feet.
B.
In cases to which this section applies, the portions of any lot within any such future right-of-way area shall not be occupied by structures other than those encroachments allowed in future rights-of-way as provided in subsection C of this section. All other required setbacks, yards, and open areas shall be provided in addition to the future right-of-way areas, and the future right-of-way lines shall be considered to be lot lines for purposes of measuring such other setbacks, yards, and open areas.