The transcript and judgment may be entered in the Superior Court of the county in which the structure is situated and, when so entered, if within 2 days from the date of the judgment, shall become a lien on such structure or bridge and upon the ground upon which the same is erected and shall relate back to the day when the labor was commenced and shall take priority accordingly. Any and all transcripts taken and entered in the Superior Court under this subchapter shall contain a description of the property upon which it is to become a lien and shall conform to the description set forth in the plaintiff's statement. All costs and charges shall follow the judgment and shall be the same as are authorized by law in civil cases before justices of the peace. Every contractor, when so required, shall give ample security to the owner of any structure being altered, erected or repaired by him to save such owner harmless from the provisions of this subchapter.