In addition to the general goals listed in the statements of purposes and community development objectives, it is the purpose of this article to encourage and promote continued agricultural, open space and conservation uses in the R-l Zone, while also permitting low- to medium-density residential development which will be consistent with existing residential development and agricultural uses and also by providing in certain areas the option of utilizing the provisions in Article
XIV, Planned Residential Development, and Article
XV, Transfer of Development Rights, to enable landowners within the R-1 Zone to elect to develop in a manner other than lot by lot, which will provide a greater variety in type, design and layout of dwellings and conservation of open space ancillary to such buildings.