Other ordinances and private agreements. This chapter
is not intended to interfere with, abrogate or annul any other ordinance,
regulation or other provision of law, or any easement, covenant or
other private agreement or legal relationship. When this chapter imposes
restrictions on use or bulk different from those imposed by any other
statute, ordinance, regulation or other provision of law, or by any
easement, covenant or private agreement or legal relationship, whichever
provisions are more restrictive or impose higher standards shall control.