The following regulations shall govern the design and layout of lots:
(a) The lot arrangement and design shall be such that all lots will provide satisfactory building sites, properly related to topography and the character of surrounding development.
(b) All lots shall conform to or exceed the requirements of the zoning district in which they are located and the use for which they are intended.
(c) All side lot lines shall be at approximate right angles to street lines and radial to curved street lines, except where the Commission determines that a variation to this rule would provide a better layout.
(d) Lots with double frontage shall be avoided except where the Commission determines that it is essential to provide separation of residential development from arterial streets.