In interpreting and applying the provisions of this Part
5, they shall be held to be the minimum requirements for the promotion of the public safety, health, convenience, comfort, prosperity and general welfare. It is not intended by this Part
5 to interfere with, abrogate, annul or repeal any rules or regulations previously adopted and not in conflict with any of the provisions of this Part
5, or which shall be adopted, pursuant to law relating to the use of buildings or premises, nor is it intended by this Part
5 to interfere with or abrogate or annul any easements, covenants or other agreements between parties, except that where this Part
5 imposes a greater restriction upon the use of buildings or premises or upon the height of buildings, or requires larger open spaces than are imposed or required by such other ordinances or such easements, covenants or other agreements, the provisions of this Part
5 shall control.