In interpreting and applying this chapter, the requirements contained herein are declared to be the minimum requirements for the protection of the public health, morals, safety, comfort, convenience and general welfare. Where the provisions of any other statute, bylaw, ordinance or regulation require a greater width or size of yards or other open spaces or a lower height of building or a fewer number of stories or a greater percentage of lot area to be left unoccupied or otherwise impose greater restrictions than are required by this chapter, the provisions of such statute, bylaw, ordinance or regulation shall govern.