Section 6-622. Pavements

The  board of trustees may cause a street in the
  village or a part thereof, to be graded and paved or repaved  wholly  at
  the  expense  of  the village, or wholly at the expense of the owners of
  the adjoining land or partly at the expense of each. If  the  street  or
  part thereof is wholly within the village, but the exterior line thereof
  constitutes  the  village  boundary, such improvements may be made as to
  the part of such street within the village either wholly at the  expense
  of  the village or wholly at the expense of the owners of adjoining land
  within and without the village or partly at the expense of each.  Before
  any such street or portion thereof is graded or paved, wholly or  partly
  at  the  expense of the owners of the adjoining land, a hearing shall be
  held and notice thereof given as  hereinbefore  provided  for.  If  such
  expense, or any part thereof, is to be assessed upon adjoining land, the
  board of trustees may apportion it upon the lands and assess the same as
  a  whole  or  by installments.   Provided, however, where a street is so
  improved wholly at the expense of the owners of the adjoining land,  the
  cost  thereof  shall  be assessed in proportion, as nearly as may be, to
  the benefit which each lot or parcel will derive therefrom.