No lot or parcel of land in single, separate
ownership and of record on the effective date of this chapter shall
be reduced in any manner below the minimum lot size required by this
chapter.
In case a substandard lot, as defined herein,
unimproved and in bona fide single, separate ownership on the effective
date of this chapter, or of an amendment thereto imposing enlarged
area, the date of application for a building permit, has an area or
width less than that prescribed by these regulations, a building may
be erected thereon, subject to a variance being granted by the Board
of Appeals in accordance with the regulations herein, provided that
the building shall comply with all provisions of these regulations
other than such area requirements. Where, at the time or times hereinbefore
set forth, the owner of such lot owns or has an enforceable right
to acquire other lots or parcels contiguous to the lot for which such
building permit is applied, such other lots or parcels, or so much
thereof as may be necessary to create conformity with the then existing
area, width or yard restrictions (without, however, creating any other
nonconformity), shall be combined with the original lot or parcel,
whereupon a permit may be issued, but only for such combined lot or
parcel.
No land required for yards or lot area per dwelling
unit for existing buildings or which hereafter is provided for any
building or dwelling unit, in order to comply with the provisions
of this chapter, shall be considered as a yard or lot area per dwelling
unit for any other building; nor shall any yard or lot area per dwelling
unit on an adjoining lot be considered as providing such yard, open
space or lot area per dwelling unit on a lot upon which a building
is to be erected.