Any lot platted, subdivided or approved for subdivision on or after July 3, 1972, and prior to November 16, 2004, shall conform to all requirements of this chapter, except to the following existing requirements:
(1)
Principal building.
(a)
Front yard setback: 20 feet.
(b)
Lot area per family: 9,000 square feet.
(c)
Minimum lot width: 75 feet.