In interpreting and applying the provisions of this chapter, they shall be held to be the minimum requirements for the promotion of the public health, safety, and general welfare. It is not intended to interfere with, abrogate, or annul any ordinance, rule, regulation, or permit, previously adopted or issued pursuant to law relating to the use of buildings or land.

Whenever the regulations made under authority of this chapter require a greater width or size of yards, courts, or other open spaces, or require a lower height of buildings, or less number of stories, or require a greater percentage of lot to be left unoccupied, or impose other higher standards than are required in any other statute or local ordinance or regulations, the provisions of the regulations made under authority of this chapter shall govern. Wherever the provisions of any other statute or local ordinance or regulation require a greater width or size of yards, courts, or other open spaces, or require a lower height of buildings, or a less number of stories, or require a greater percentage of lot to be left unoccupied, or imposed other higher standards than are required by the regulations made under authority of this chapter, the provisions of such statute or local ordinance or regulation shall govern.