The board of aldermen’s order shall require the owner, lienholder, or mortgagee of the building to, within thirty (30) days, secure the building from unauthorized entry; or repair, remove, or demolish the building, unless the owner or lienholder establishes at the hearing that the work cannot reasonably be performed within thirty (30) days. If more than thirty (30) days are allowed to the owner, lienholder, or mortgagee to repair, remove, or demolish the building, then the board of aldermen shall establish a specific time schedule for the commencement and performance of the work, and shall require the owner, lienholder, or mortgagee to secure the property in a reasonable manner from unauthorized entry while the work is being performed. Notwithstanding anything to the contrary herein, the city will not allow the owner, lienholder, or mortgagee more than ninety (90) days to repair, remove, or demolish the building, or fully perform all work required to comply with the order, unless the owner, lienholder, or mortgagee: (1) submits at the hearing a detailed plan and time schedule for the work; and (2) establishes at the hearing that the work cannot be reasonably completed within ninety (90) days because of the scope and complexity of the work. If more than ninety (90) days are allowed to an owner, lienholder, or mortgagee to complete any part of the work required to repair, remove, or demolish the building, the city will require the owner, lienholder, or mortgagee to regularly submit progress reports to the city to demonstrate that the owner, lienholder, or mortgagee has complied with the time schedule established for commencement and performance of the work. The order may require that the owner, lienholder, or mortgagee to appear before the mayor, or the mayor’s official designee, to demonstrate compliance with the time schedules. If the board of aldermen allow more than 90 days to complete the work, the city may require a bond or other security as authorized under Section 214.001(k) of the Local Government Code if the owner or lienholder/mortgagee owns property within the city (including structures or improvements) which exceed one hundred thousand ($100,000.00) dollars in total value.