An existing dwelling of a class hereinafter defined may be converted into dwelling units for the use of two or more families subject to the conditions hereinafter stated. The class of dwellings which may be so converted shall be limited to any dwelling which shall have been erected more than 20 years before such proposed conversion, and any dwelling, although not having been erected more than 20 years before such conversion, which shall be one the Borough Council, after a hearing, finds to be in such a state of disrepair, obsolescence or dilapidation as to be, in its existing state, dangerous or injurious to health, safety, general welfare or the conservation of the value of property in its neighborhood. The dwellings hereinbefore mentioned may be so converted only subject to the following conditions, unless the Borough Council, after a hearing, finds that the general purpose and intent of this article will be promoted by permitting an exception thereto and authorizes the same.
(a) The principal building or buildings on a lot on which a dwelling is so converted shall not occupy more than 1/4 of the ground area of such lot.
(b) A dwelling to be converted for the use of three or more families shall have a lot area of not less than 10,000 square feet for the first three family units to be accommodated therein and an additional 2,000 square feet for each additional family unit.
(c) Any addition to an existing building shall come within the front, side and rear yard requirements for the applicable zoning district. No additions shall be made as a result of which the principal building or buildings shall occupy more than 1/4 of the ground area of the lot on which such building or buildings are located.
(d) Fire escapes and outside stairways leading to a second or higher floor shall, where practicable, be located on the rear of the building and shall not be located on any building wall facing a street.
(e) No dwelling shall be so converted unless in connection therewith it be placed in a reasonable state of repair.
(f) After the conversion, the dwelling shall retain substantially the appearance of a one-family dwelling.
(g) Garage or off-street parking facilities shall be provided sufficient to provide storage or parking for a number of vehicles equal to not less than two-thirds the number of family dwelling units.