Neither the Building Official nor any officer or employee under the Building Official’s charge or supervision, nor any other person having any duty under the building code except as a member of the Board of Adjustments and Appeals, shall be financially interested in the furnishing of labor, material, or appliances for the construction, alteration, or maintenance of a building, or in the making of plans or of specifications therefor, unless he or she is the owner of such building. No such officer or employee shall engage in any work which is inconsistent with his or her duties or with the interests of the office of the Building Official.
('81 Code, § 150.13) Penalty, see § 150.999