The background of our thesis is the fact that properties and their related industry have a big negative impact on our environment. Since the real estate business is an important part of how the society is constructed, environmental solutions and sustainable real estate development can contribute to positive climate changes globally. The last decades have shown an increasing number of green properties, however the proliferation on the Swedish market is still slow. Existing research describes different benefits and motivators that should encourage investments in environmentally certified properties among real estate companies. Benefits that are established are for example lower energy- and maintenance costs, lower vacancy rate, an improved company image and increasing market value. We believe there is a gap of information considering how the real estate companies experience that these benefits are generated from a green building, as well as how motivators have impacted on the companies’ investment decisions. The purpose of this thesis is therefore to explain how different motivators affect real estate companies to invest in environmentally certified properties. To answer the purpose of our thesis, we have created four different hypotheses based on existing research which includes an improved result, increased economic profitability, improved company image and the opportunity of incentive programs and economic contributions. The hypotheses of our study have been tested with a quantitative method, through a survey. Collected data from our study has been analysed through a multiple regression analysis, where the four motivators have been analysed against the real estate companies share of investment decisions in environmentally certified properties. The conclusion of this thesis is that none of the hypotheses reached statistical significance and therefore the collected data cannot prove any relations between the motivators and companies’ investment decisions. Although, through our study, we have been able to identify both differences and similarities between theoretical claims and the result from our study. Even though statistical relations cannot be confirmed, the survey has collected descriptive data which contributes to a general view of how Swedish real estate companies today evaluate environmentally certified properties and how they are motivated to invest in these properties.