<P> In 2007 the Allahabad government said the structure is illegal because the land's owner, the Waqf Board, had no right to sell it, as Waqf property can neither be sold nor transferred . Ambani then obtained a No Objection Certificate from the Waqf Board after paying ₹ 1.6 million and began construction . In June 2011, the Union government asked the Maharashtra government to consider referring the matter to the Central Bureau of Investigation . </P> <P> In regards to the three helipads, the Indian Navy said it will not allow the construction of helipads on Mumbai buildings, while the Environment Ministry, following a representation from Awaaz Foundation, said the helipads violate local noise laws . Issues have also been raised with regards to the construction of an illegal car park . </P> <P> In 2011 it was reported that Ambani had yet to move into the home, despite its completion, for fear of "bad luck". According to Basannt R. Rasiwasia, an expert in Vastu shastra, claims the home does not conform to Vastu requirements . </P> <P> The Indian media have frequently reported that Antilia is the world's most expensive home, costing approximately US $2 billion . Thomas Johnson, director of marketing at architecture firm Hirsch Bedner Associates (consulted by Reliance during the design of the building's floor plan) told Forbes magazine the residence cost nearly $2 billion . </P>

Who owns most expensive house in the world