It is not intended by this Ordinance to repeal, abrogate, annul or in any way impair or interfere with existing provisions of other laws or ordinances, (except as the same may be specifically repealed by the terms of this Ordinance) or with private restrictions placed upon property by covenant, deed, easement or other private agreement. Where this Ordinance imposes a greater restriction upon land or structures than is imposed or required by other laws, ordinances, deeds, covenants or agreements, the provisions of this Ordinance shall govern.