If the person(s) provided with a notice to repair fails to commence the repairs within the time period specified in said notice, or timely commences the repair but fails to diligently prosecute the same without interruption to completion, the Director may thereafter cause the City to make the required repairs and bill the person(s) for the cost thereof. If such person(s) fails to pay the cost within the time period specified in the payment invoice, the unpaid sum shall be a lien on the lot, lots or portions thereof adjacent to or fronting on the defective sidewalk. (Ord. 2018-05, 7-17-2018)