In 2018, Castellum received two awards for sustainability efforts; designated Number One in the world by GRESB for the offices-and-logistics sector, as well as the Level Gold award for sustainability reporting from the EPRA (European Public Real Estate Association). In addition, Castellum is the only Nordic real estate and construction company elected to the Dow Jones Sustainability Index (DJSI), joining a select group of companies in the world who perform best on sustainability issues.