What changes were made to the House before it opened as a Museum?

The bulk of the work performed on the House in 2002 was repairs and conservation. There are three major changes: (1) Louis’s den has been restored to look exactly as it did during his lifetime, (2) the garage has been converted into a Welcome Center and Museum Store, and (3) the third floor—an illegal addition which Lucille added six years after Louis died—has been removed. All of the work was approved by the State Historic Preservation Office and the New York City Landmarks Preservation Commission