Where a local authority consider that the operation of any building byelaw in force in their district would be unreasonable in relation to any particular case, they may with the consent of the Minister relax the requirements of the byelaw or dispense with compliance therewith:
Provided that the authority shall give notice of any such proposed relaxation or dispensation in such manner and to such persons, if any, as the Minister may direct, and the Minister shall not give his consent before the expiration of one month from the giving of the notice and, before giving his consent, shall take into consideration any objection which may have been received by him.