When required by the local authority to do so and subject to the provisions of subsection(1) of section 22 of this Chapter and section 23 of Chapter 2, every building site shall be investigated from the point of view of soil conditions which will affect the foundations by a person who, to the satisfaction of the local authority, is qualified by training and experience to do so, and, if required by the local authority a copy of the report of the site investigation shall be submitted to such authority. Except where the local authority permits otherwise, such investigation shall include one or more soil profiles recorded in accordance with the Schedule.