Notwithstanding the limitations imposed by any other provision of these Standards, the Planning Commission may permit erection of a dwelling on any lot (in a residence district where permitted by these Standards) separately owned or under contract of sale and containing, at the time of the effective date of these Standards, an area or a width smaller than that required for a single family dwelling. In no case shall any dwelling be permitted within five (5) feet of a lot line in any residence district. (Ord. 9-3-68.)