370258 01: (FILE PHOTO) Microsoft founder Bill Gates'' home lines the banks of Lake Washington, May 30, 2001 in Seattle, Washington. Despite 37,000 square feet of living space in the home, Gates is applying to his local planning council for permission to expand the house, seeking to add an additional child's bedroom, among other changes. Gates and his wife Melinda are expecting their third child. The home currently has 24 bathrooms and six kitchens, but only four bedrooms. (Photo by Dan Callister/Newsmakers)