In all parks, each home must be placed on a parcel of land within a park, known as a "space," with a minimum area of 15,000 square feet and with a minimum contiguous frontage of 100 feet along a private road within the park. Only one home may be placed on each space. Each space shall be permanently delineated on the approved site plan. The Planning Board may make reasonable requirements for the location of the placement of homes on a space, including reasonable setback requirements.