Provided that no such order shall be passed unless the aggrieved party has been given an opportunity of being heard.

Lapse of sanction after one year from the date of such sanction.- Every sanction for the erection or re-erection of any building shall remain in force for one year only from the date of such sanction, or for such longer period as the Chief Executive Officer may allowed when conveying sanction under section 293. If the erection or re-erection of the building is not commenced within one year and completed within two years or such longer period as may have been allowed by the Chief Executive Officer the sanction shall be deemed to have lapsed; but such lapse shall not bar any subsequent application for fresh sanction under the foregoing provision of this Act