A lot or building may be occupied by the following provisional uses:
(a) Accessory apartment, subject to the requirements of Chapter 1135.
(b) Dwelling, zero lot line or attached, subject to the requirements of Chapter 1135.
(c) Nursing home, subject to the requirements of Chapter 1135.
(d) Religious institution, subject to the requirements of Chapter 1135.
(e) Rooming house, provided the minimum lot area per rooming unit shall be 2725 square feet.