article_snippet: He submitted a series of planning proposals seeking permission to redevelop the 46-room home, including building a recording studio and an indoor swimming pool.
article_snippet: The home also included a swimming pool.
article_snippet: He wanted to build a new one in an underground extension .
article_snippet: Plans for the doomed proposal show the huge two-storey underground extension planned by He .
article_snippet: The extensive building work, which included a new garage, would have meant a number of trees were felled .
highlights_snippet: Williams wanted huge underground extension to Williams  mansion home .
  