Any building or structure hereinafter erected, reconstructed, altered, enlarged or moved or any use of premises hereinafter established, altered or expanded in the Town of Groton shall be in conformity with the provisions of this chapter.

In accordance with MGL c. 40A, and notwithstanding any provisions to the contrary, this chapter shall not prohibit, regulate or restrict the use of land or structures for religious purposes or for educational purposes on land owned or leased by the commonwealth or any of its agencies, subdivisions or bodies politic or by a religious sect or denomination or by a nonprofit educational corporation; provided, however, that such land or structures may be subject to reasonable regulations concerning the bulk and height of structures and determining yard sizes, lot area, open space, parking and building coverage requirements, in accordance with the provisions of this chapter; and this chapter shall not prohibit, unreasonably regulate or require a special permit for the use of land for the primary purpose of agriculture, horticulture or floriculture, except that all such activities may be limited to parcels of more than five acres which are not zoned for agriculture, horticulture or floriculture, nor shall provisions of this chapter exempt land or structures from floodplain or wetlands regulations established pursuant to general law.