In interpreting any provision of this chapter, it shall be held as the minimum requirement adopted for the promotion of the public health, safety, and general welfare of the Town. Whenever any provision of this chapter is at variance with any other provision of this chapter, or with the requirements of any other lawfully adopted rule or regulation, the most restrictive, or that imposing the highest standard, shall govern. [RSA 676:14] This chapter is constructed as a permissive zoning ordinance; if a use is not identified as a permitted use or a use permitted by special exception in a zoning district, then the use is not permitted in that zoning district.