HPP aspires to create architectural quality of lasting value beyond the here and now: timeless and yet clearly part of their time, innovative and equally grounded in history. They specialize in the design of corporate headquarters and campus, sports facilities, education and culture, refurbishment and listed building projects. HPP ranks as one of the 25 largest architectural offices worldwide and the second-largest in Germany.

Among the most renowned projects in the company's history are the Dreischeibenhaus in Düsseldorf, the Standard Bank Tower in Johannesburg, the Pudong Soccer Arena in Shanghai or the timber hybrid office building The Cradle in Düsseldorf. Most recently, projects such as the Xuijahui Sportspark in Shanghai, the mixed-use quarter FOUR Frankfurt, realised jointly with UNStudio, the Southern Überseequartier in Hamburg or the Alibaba Campus in Hangzhou have been completed. Currently under construction are the Nanshan Science & Technology Innovation Center in Shenzhen, the revitalization and extension of the opera “Bühnen Köln” or the residential conversion Leon 11 in Munich. Projects now in planning include the Theater aan het Vrijthof in Maastricht, the Justice Center Cologne or the New Medical Clinic of the University Hospital Tübingen.