The purpose of this paper is to try to understand if investments in the "green" lead to benefits for real estate investors and therefore if these benefits outweigh the costs. Therefore, attention was paid (i) to the classification and numerosity census of real estate (RE) investments screening for environmental, social and governance (ESG) criteria based, within the ESG-framework, on their compliance score with environmental factors; (ii) to the effect that green property criteria have on the property value and expected yield considering implied risk. The survey of “green” RE investments and their performance characteristics contributes to the analysis of the role of sustainable investments in the strategic asset allocation decisions and portfolio diversification in the context of variance-minimizing investments. The analysis was carried out by comparing sustainable investments made in the EU member countries over the last decade.