The provisions of this chapter shall be held to be the minimum requirements for the promotion of the health, safety, morals and general welfare of the municipality. It is not intended to interfere with or abrogate or annul other rules, regulations or ordinances of the municipality, provided that where this chapter imposes a greater restriction upon the use of buildings or premises, or upon the height of a building, or requires larger open spaces than are imposed by such other rules, regulations or ordinances, the provisions of this chapter shall control.