The purpose of this chapter is to promote in all possible ways the health, safety and general welfare of the community and to provide for variety of housing opportunities and densities, and to protect the property values and aesthetics of the community by channeling and directing growth and by regulating and restricting the height, appearance, number of stories and size of buildings and other structures, the percentage of a lot that may be occupied, the size of the yards, courts and other open spaces, and the density and the location and use of buildings, structures and land for trade, industry, residence and other purposes, to the maximum extent permissible within the proper exercise of the police power as delegated by the Town Law.