H+N+S Landscape Architects has grown steadily since its foundation in 1990 and currently consists of approximately 30 professionals, connected by love for the profession and passion for the landscape. The management consists of: Nikol Dietz, Hank van Tilborg and Pieter Schengenga. Founding fathers Dirk Sijmons and Lodewijk van Nieuwenhuijze stepped down from the board in 2013 and 2015 respectively, followed by Jandirk Hoekstra in 2017. All three have been associated with H+N+S as advisors for years. Jandirk until his death in February 2024. Dirk and Lodewijk are still advisors to the office until the present day.