It is not intended by this chapter to repeal, abrogate, annul or interfere with any existing ordinance or enactment, or with any rule, regulation or
adopted or issued thereunder, except insofar as the same may be inconsistent or in conflict with any of the provisions of this chapter, provided that where this chapter imposes greater restriction upon the
of
or land or upon the height and bulk of
or prescribes larger open spaces than are required by the provisions of such ordinance, enactment, rule, regulation or
, then the provisions of this chapter shall control.