In their interpretation and application, the
provisions of this chapter shall be held to be the minimum adopted
for the promotion of the public health, safety, comfort, convenience
and general welfare. Except where specifically provided to the contrary,
it is not intended by this chapter to repeal, abrogate, annul or in
any way to impair or interfere with any rules, regulations or permits
previously adopted or issued, or which shall be adopted or issued
pursuant to law relating to the use of buildings, structures, shelter
or premises. Nor is it 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 a building or premises or requires
larger open space than are imposed or required by any other statute,
local law, rule, regulation or permit or by any easement or agreement,
the provisions of this chapter shall control.