law: Census Act, 1948
  
  9.Occupier  to permit access and affixing of
  
  numbers:-
  Every person occupying any house, enclosure,
  
  vessel or other place shall allow census-officers such access thereto as they
  
  may require for the purposes of the census and as, having regard to the of
  
  customs of the country, may be reasonable, and shall allow them to paint on, or
  
  affix to, the place such letters, marks or numbers as may be necessary for the
  
  purposes of the census.