Minimum requirements. In interpreting and applying
the provisions of this chapter, they shall be held to be the minimum
requirements for the promotion of the public safety, health, convenience,
comfort, prosperity or general welfare. It is not intended by this
chapter to interfere with or abrogate or annul any easements, covenants
or other agreements between parties; provided, however, that, where
this chapter imposes a greater restriction upon the use of buildings
or premises or upon height of buildings, or requires larger open spaces
that are imposed or required by other ordinances, rules, regulations
or by easements, covenants or agreements, the provisions of this chapter
shall govern.