If any one of two or more contiguous parcels or units held by the same owner does not conform to existing zoning regulations so as not to permit its development, and at least one parcel or unit has not been developed with a building for which a building permit is required, then such parcels shall be considered as merged for the purpose of this chapter.
('61 Code, § 10-2.1102) (Ord. 252 C.S., passed 8-3-81)