The family name is found on many real estate developments in Japan. Minoru and his brother Akira were listed on the Forbes list of the world's richest men. His largest project was the Roppongi Hills development in Tokyo which opened in 2003. The Shanghai World Financial Center, which was once China's tallest building, was completed in 2008. Mori acknowledged the influence of Le Corbusier but believed he had surpassed the Swiss architect's urban designs, particularly in the Roppongi Hills project.
In 2006, Mori's last development, Omotesando Hills, opened near Harajuku station consisting of a set of ramped shopping floors.
In 2008, he was named Asia Businessman of the Year 2007 by Fortune magazine.
In 2009, he was honored as an honorary Knight Commander of the Order of the British Empire (KBE) by Queen Elizabeth II. He died of heart failure in 2012. He was 77.