It is not intended by the regulations to repeal, abrogate, annul or in any way impair or interfere with existing provisions of other laws, regulations or ordinances, except those specifically repealed by these regulations, or with private restrictions placed upon property by covenants running with the land (to which the Town is a party). Where these regulations pose a greater restriction upon land, buildings or structures than is imposed or required by such existing provisions of regulations, ordinances, contracts or deeds, the provisions of these regulations shall control.