As the years progressed, Otto Wagner found his son to be less than he had hoped. Although Otto Emmerich became an established architect, he was not seen so by his father, who wrote in 1919: "I have never seen any body with so little artistic flair and with so little taste. This worries me greatly, for what are all my buildings going to look like if it is left to him to complete them?" Otto Emmerich died in 1945. He was buried in the family vault, which he himself had designed, in the Hietzing cemetary in Vienna.