Berkshire Hathaway already owns a group of housing-related operating businesses. A new investment in one Dividend King is also a bet on U.S. housing and construction. Buffett has often touted the strength of the U.

Warren Buffet is not in the market to buy another railroad but he did meet with the CEO of CSX and discuss greater cooperation, he told CNBC's Becky Quick on Monday. Buffett and Greg Abel met with CSX CEO Joseph Hinrichs in Omaha on Aug.