Section 302. Appraisals; prevesting discovery

Real property to be acquired
  by the exercise of the power of eminent domain  shall  be  appraised  on
  behalf  of the condemnor by an appraiser. In order to adequately prepare
  such appraisal upon which the condemnor's offer is based, the  condemnor
  shall  have  the  right  to  inspect such property prior to vesting. The
  owner, his agents or employees, tenants or other  occupants  shall  upon
  reasonable  notice  by  a  written  request  by  the  condemnor, provide
  pertinent data or information including books and records  necessary  to
  prepare  such appraisal. A party affected by such request may, where the
  request  for  such  information  is  objected  to  as  unreasonable   or
  burdensome, petition a court of competent jurisdiction for relief.
    Failure  of  the  owner  to comply with this section shall suspend the
  condemnor's obligation to make  an  offer  to  such  owner  pursuant  to
  article three until such time as this information is provided.