law: Land Acquisition Act, 1894
  49.Acquisition of part
  
  of house of building:-
  (1) The provisions of this
  
  Act shall not be put in force for the purpose of acquiring a part only of any
  
  house, manufactory or other building, if the owner desire that the whole of
  
  such house, manufactory or building shall be so acquired:
  Provided that the owner may, at any time before the Collector has made his award
  
  under section 11, by notice in writing, withdraw or modify his expressed desire
  
  that the whole of such house, manufactory or building shall be so acquired.
  Provided also that, if any question shall arise as to whether any land proposed
  
  to be taken under this Act does or does not form part of a house, manufactory
  
  or building within the meaning of this section, the Collector shall refer the
  
  determination of such question to the Court and shall not take possession of
  
  such land until after the question has been determined.
  In deciding on such a
  
  reference the Court shall have regard to the question whether the land proposed
  
  to be taken is reasonably required for the full and unimpaired use of the
  
  house, manufactory or building.
  (2) if, in the case of
  
  any claim under section 23, sub-section (1), thirdly, by a person interested,
  
  on account of the severing of the land to be acquired from his other land, the
  
  appropriate Government is of opinion that the claim is unreasonable or
  
  excessive, it may, at any time before the Collector has made his award, order
  
  the acquisition of the whole of the land of which the land first sought to be
  
  acquired forms a part.
  (3) In the case last
  
  hereinbefore provided for, no fresh declaration or other proceedings under
  
  sections 6 to 10, both inclusive, shall be necessary; but the Collector shall
  
  without delay furnish a copy of the order of the appropriate Government to the
  
  person interested, and shall thereafter proceed to make his award under section
  
  11.