(a) The contractor or builder having a permit for new construction, or additions to existing buildings, shall notify the Chief Building Official or Building Inspector immediately upon the marking or laying out of the site and foundation for such work. The Official or Inspector shall inspect the layout for conformity with this article and with respect to lot lines, setbacks and location of the proposed buildings to determine conformity with the city zoning regulations. In case of doubt respecting the required location, the Chief Building Official may require an official survey of the lot lines to determine conformity, at the expense of the permit holder.
(b) Upon completion of the excavation for the building foundation and footings and the construction of the necessary forms thereof and before the foundation and footings are poured or laid, the Official or Inspector shall be notified as in the first case, and it shall be his or her duty to inspect all such work for conformity with laws respecting location of the building foundations and footings.
(c) The Building Inspector shall, during the course of all building, make such other inspections as may be directed by the Chief Building Official to be made during any successive stage of the construction or other work covered by a permit in order to secure compliance with laws pertaining thereto.