One big challenge for Real Estate and Construction companies lies in the implementation of measures to achieve sustainable products, responsible behavior and good governance. Therefore, sustainability initiatives play a great role in showing the private sector ways how to reach sustainability targets and filling in the gaps left by governmental regulations. One of the most important initiative for sustainability subjects worldwide is the United Nations Global Compact. By a worldwide investigation of current trends, other initiatives, foundations and conventions, this thesis identified the need for voluntary initiatives in the Real Estate and Construction Sector. At the same time, the sector is found to be underrepresented within the Global Compact, although it is having a great influence on the use of land, resources and the world's climate. So, this thesis develops strategic recommendations how to adapt the Global Compact initiative to the Real Estate and Construction Sector.