A Code Enforcement Officer, Building Inspector or an officer or employee of the Building Department shall not engage in any activity inconsistent with his/her duties or with the interests of the Building Department; nor shall be/she, during the term of his/her employment, be engaged directly or indirectly in any building business, in the furnishing of labor, materials, supplies or appliances for or the supervision of the construction, alteration, demolition or maintenance of a building or the preparation of plans or specifications thereof within the Town of Lima, excepting that this provision shall not prohibit any employee from engaging in any such activities in connection with the construction of a building or structure owned by him/her for his/her own personal use and occupancy or for the use and occupancy of members of his/her immediate family and not constructed for sale.