Section 11.03   Nonconforming Lots
   (1)   Any legal lot existing at the time of the enactment of this Ordinance or any amendment, which does not conform with lot area, lot width, or lot depth for the zoning district in which it is located, may be used for any use permitted in that zoning district provided all other applicable regulations of this Zoning Ordinance are complied with.
   (2)   Any lot, after this Ordinance or amendments thereto become effective, shall not be reduced in any manner below the lot area and dimension requirements of this Ordinance for the zoning district in which it is located or, if a lot is already less than the minimum so required, such lot area or dimension shall not be further reduced.
   (3)   Any lot, after this Ordinance or amendments thereto become effective, shall not be reduced or diminished so as to cause the yards, lot coverage, or other open spaces to be less than that required by this Ordinance. The lot area per dwelling unit shall not be decreased to less than required by this Ordinance.