In their interpretation and application, the provisions of this chapter shall be held to be the minimum requirements for the promotion of the public health, safety, convenience, comfort and general welfare. It is not intended by this chapter to interfere with or abrogate or annul any easement, covenant or other agreement between parties; provided, however, that when this chapter imposes a greater restriction on the use or regulation of structures or land or on the heights of structures, or requires larger open spaces, or imposes any higher standard than are imposed or required by any other statute, law, ordinance, rule, regulation or by any easement, covenant or agreement, the provisions of this chapter shall control. Where the requirements of this chapter differ from the requirements of another statute, law, ordinance, rule or regulation, the more restrictive shall govern. Where additional regulations exist (or are enacted) in other chapters, these regulations are deemed to supplement the additional regulations so enacted and must be observed in context with this chapter. However, in all cases where competing or conflicting regulations are encountered, the more restrictive regulation shall be observed.