It is not intended by this chapter to repeal, abrogate, annul or in any way affect the existing provisions and requirements of other ordinances or the existing provisions or requirements of the laws, rules and regulations prescribed by the state and federal governments or any of their respective regulatory agencies or existing private restrictions placed upon property or restrictive covenants running with the land and imposed by deed or other private agreement. In cases where the laws of the state or federal governments or any of their respective regulatory agencies impose a greater restriction or a stricter requirement upon lands, buildings, structures, uses or other features than is imposed by this chapter, or in cases where private restrictions or private covenants running with the land impose a greater restriction or a stricter requirement upon lands, buildings, structures, uses or other features than is imposed by this chapter, such laws, rules, regulations, private restrictions or private covenants shall control. However, where this chapter imposes a greater restriction or a stricter requirement, this chapter shall control.