21.1.3. The building commissioner or a building deputy-commissioner may not, on pain of forfeiture of office, hold an office, carry on an activity or put himself in a situation incompatible with his duties of office.
Furthermore, the building commissioner or a building deputy-commissioner may not, on pain of forfeiture of office, have a direct or indirect interest in an enterprise putting his personal interest in conflict with that of his office. However, such forfeiture is not incurred if the interest devolves to him by succession or gift, provided he renounces or disposes of it with dispatch.