As transparency has become the new paradigm of economic activities, we set out to analyse the extent to which the EU real estate companies legitimise their role in society through the sustainable development goals (SDGs) while meeting stakeholders’ information needs. Applying the content analysis, the sustainability reports and the annual reports of the entities from the real estate sector, from 2016 to 2018, were studied in order to highlight the priority SDGs of the field and the extent to which they are integrated in their business models. In addition, we evaluated, based on a quality score, the depth with which the entities report their sustainability commitments. The results of the study show that although more and more real estate entities are expressing their interest for sustainable development, there is still a large gap between the assumed intentions and the real actions undertaken by the companies. Most of them do not have the strategy, culture and tools needed to turn sustainability commitments into concrete actions. According to the average quality score (2.99 out of 5), the entities present their sustainability aspirations mostly qualitatively and report few quantitative key performance indicators (KPIs) to reveal the degree of achievement of the priority SDGs, such as: SDG 11—Sustainable cities and communities, SDG 13—Climate action and SDG 8—Decent work and economic growth.