Section 5-308. Application to condemn; contents of petition

Upon the
  application to condemn, the corporation counsel  shall  present  to  the
  court  a  petition  signed  and verified by him or her, setting forth in
  addition to other requirements of the eminent domain procedure law,  the
  following:
    1. The order of the mayor authorizing the proceeding.
    2.  The  amount of valuation at which each parcel of the real property
  to be acquired has been assessed for purposes of taxation  on  the  city
  tax  rolls  for  each  of  the  three  years  preceding  the date of the
  petition.  Such assessed valuation, in case only part of an entire  plot
  in a single ownership is to be acquired, shall be pro-rated according to
  the  area  of the part so to be acquired but shall include the valuation
  of all buildings encroaching upon or within the lines  of  the  proposed
  improvement.
    3.  A  prayer that the real property described therein be condemned by
  such court.