The provisions of this chapter shall be interpreted to be the minimum requirements adopted for the promotion of the health, safety, morals, or the general welfare of the City of Northampton, Massachusetts, and except for Chapter 44, Zoning Ordinance, of the Revised Ordinances of the City of Northampton, Massachusetts, 1959, and all subsequent amendments thereto, the provisions of this chapter are not intended to repeal, amend, abrogate, annul, or in any way impair or interfere with any lawfully adopted ordinance, covenants, regulations, or rules. Whenever the regulations made under the authority hereof differ from those prescribed by any statute, ordinance, or other regulations, that provision which imposes the greater restriction or the higher standard shall govern.