A. 
Each owner, and a tenant for 99 years or for 99 years renewable forever or the executor or administrator of such tenant or the guardian of an infant owner or a mortgagor in possession shall be deemed and taken as such owner, of a lot within the City and fronting on any street shall make or cause to be made a sidewalk and curb in front of such lot or premises in conformity with the grade and curbline as shall be established by the Street Commissioner. Such sidewalks and curbs shall be made of such material and in such manner as the legislative body shall by resolution prescribe, and it shall be the duty of such owner to keep such sidewalk and curb in good and substantial repair.
B. 
Before any owner of any lot or premises fronting upon any street within the City process to pave or repair any sidewalk or curb in front of any such lot or premises, he shall first apply to the Street Commissioner, in writing, for the grade and curbline of such sidewalk or curb.
Sidewalks and curbs shall be constructed, maintained and repaired in conformity with the specifications and standards prescribed by the Street Commissioner and approved by the legislative body, as provided in § 139-2.
Whenever, in the judgment of the legislative body, it may be necessary to fill up or dig down to the proper grade or pave or repair or relay the sidewalks or curbs in front of any lot or premises fronting upon any street within the City, the legislative body shall pass an order or resolution requiring the owner of any such lot or premises to fill up or dig down to the proper grade or pave or repair or relay the sidewalk or curb within 30 days from the time when such owner shall have been notified of such order by the Street Commissioner, such notice to be served upon any lot owner residing within the City, but in the event of any such lot owner being a nonresident of the City, then the notice may be served personally or the Street Commissioner shall publish it in some newspaper published in the City not less than four consecutive times, and the notice of 30 days to be reckoned from the second publication; if any owner of any such lot or premises fronting on any street in the City shall neglect to fill up, dig down, pave or repair or relay the sidewalk or curb within 30 days when notice shall have been given as aforesaid, the legislative body may immediately thereafter direct the Street Commissioner to cause the work to be done at the expense of the owner of said lot, which expense, together with an addition thereto of 10% for the expense of collection, shall be a lien on such property until paid and shall be collected in the same manner that ordinary taxes are collected or in the same manner as other debts of like amount are recovered pursuant to state law, provided that the additional 10% for the expense of collection hereinbefore specified shall not be charged except in cases wherein the City is obliged to resort to legal proceedings to make such collection.