While this chapter applies only to property within the Borough, in the protection of the health and safety and welfare of the people at large, and in the encouragement of the establishment and maintenance of reasonable community standards of physical environment, the effect of such application on adjacent properties and neighborhoods without regard to municipal boundary lines should be considered. It is the intention that the administration of this chapter, where it affects properties adjacent to the Borough boundary line, will be such as to promote cooperation with other political subdivisions involved, for the uniform benefit and protection of all affected properties.