Small lots for single-family detached residences. A lot, either owned individually and separately and separated from any adjoining tracts of land on July 29, 1965, and which has not subsequently become attached to other adjoining land in the same ownership, and/or which has a total area, lot width, lot frontage less than the minimum required in the Bulk Table, may be used for a single- family, detached residence no larger than if the lot was conforming to the zoning district regulations, provided that such lot shall conform to the use regulations and all the other bulk regulations, except as follows:
(a) For lots subject to regulations in Bulk Table, Group A or E, the total width of each required side yard may be reduced one foot for each foot the lot width is less than 150 feet. However, the minimum width of each required side yard shall remain at 30 feet, except for lots with lot width of less 110 feet for which no required side yard shall be less than 20 feet.
(b) For lots subject to regulations in Bulk Table, Group I, the total width of each required side yard may be reduced one foot for each foot the lot width is less than 125 feet. However, the minimum width of each required side yard shall remain at 20 feet.
(c) For lots subject to regulations in Bulk Table, Group M, the total width of each required side yard may be reduced one foot for each foot the lot width is less than 100 feet. However, the minimum width of each required side yard shall remain at 15 feet.
(d) For lots subject to regulations in Bulk Table, Group Q, the total width of each required side yard may be reduced one foot for each foot the lot width is less than 75 feet. However, the minimum width of each required side yard shall remain at 10 feet, except for lots with lot width of less than 45 feet, for which no required side yard shall be less than 7 1/2 feet.
(e) For all such lots in § 5.21 (a), (b), (c) and (d) above, the height limitation imposed in Bulk Table, Column 12, shall be waived and the maximum building height shall be 20 feet.
(f) If two or more adjoining lots are substandard by the regulations of this code and were in single ownership on July 29, 1965, the total parcel of land shall then be subject to regulations as a mean average of those bulk and area dimensions of existing lots within 500 feet on both sides of the street and on both sides of the site in question. In no case shall the building be larger than if the lot were conforming to the zoning district regulations.
(g) Outdoor public telephone booths may be located on any lot in a nonresidential district accessory to any principal buildings on the lot. Such booths shall require a front, side and rear yard which will allow traffic on the highway abutting the premises a clear line of vision, except that such booths shall not be required to be located farther from the street line than the building to which they are accessory, and such booths may be attached to the front wall of any such principal building. When a public outdoor telephone booth is the sole building on a lot, it shall require the same (except as provided in § 5.223) yards as hereinbefore required for booths accessory to a principal building, but in no event shall the booth require a greater front, side or rear yard than 25 feet.