These regulations shall be held to be the minimum requirements for the promotion of the public safety, health, convenience, comfort, morals, prosperity and general welfare. These regulations are not intended to interfere with or abrogate or annul any ordinance, resolution, rules, regulations or permits previously adopted or issued, and not in conflict with any of the provisions of this division, or which shall be adopted, or issued pursuant to law relating to the use of buildings or premises, and likewise, not in conflict with this division; nor is it intended by this division to interfere with or abrogate or annul any easements, covenants or other agreements between parties, except that if this division imposes a greater restriction, this division shall control. Whenever there is a conflict with respect to the interpretation of these regulations, the Legal Department of the appropriate jurisdiction shall issue a declaration of findings which shall be observed until such time as the division is amended. For a determination as to the use regulations, the Legal Department shall base its determination on the Standard Industrial Code, and other recognized sources or materials. (Code 1995 § 48-1.10.)