The R-1 District is composed of quiet, low-density residential areas, plus undeveloped areas where similar residential construction appears likely to occur.  The standards set forth for this district are designed to stabilize and protect the essential character of the areas so delineated, to promote and encourage a suitable environment for family life where there are children, to provide areas for suitable expansion of the town as facilities are provided and to prohibit all commercial activities.  Development is, therefore, limited to relatively low concentration, and permitted uses are limited to single-unit dwellings, plus selected additional uses, such as schools, parks, churches and certain public facilities that serve the residents of the district.  Mobile homes or rooming houses are prohibited.