It is believed that energy efficiency can make a significant contribution to achieve a low-carbon economy and fight the climate change. In the European Union (EU) buildings account for 40% of total EU energy consumption. Based on the current trends, the office real estate sector will continue to develop, and this will lead to an increase in energy consumption. To compensate for the forecasted increase in energy consumption and reduce the greenhouse gas emissions, the EU has decided to implement measures to reduce energy consumption and foster the use of renewable energy in buildings. Authors used literature review and statistical analysis to evaluate perspectives of energy efficiency measures and the use of renewable energy sources in real estate sector in Latvia. The study considers potential solutions for increasing the energy efficiency of office buildings in Latvia and the use of renewable energy resources while taking into account a number of factors: a requirement to support concept of sustainable development; current trends in office space sector of real estate industry; microclimate deficiencies of office buildings and related significant energy consumption; increasing competitiveness by exploiting the potential of renewable energy sources and reducing electricity consumption. Results show that the office space sector is developing rapidly with constant increase in competition among the relevant stakeholders. With the increase of overall level of society’s awareness, office space tenants prefer to rent cost efficient premises that use renewable energy resources. Nowadays companies and their employees are paying more and more attention to the impact of the real estate and their business activities on the environment. One of the most significant development trends in the office segment is the development of applied technologies that implement energy efficient solutions and use renewable energy, thus increasing competitiveness and contributing to reduction of the greenhouse gas emissions. In order to promote the sustainability of the planet and the growing competition in the office segment, it is necessary to invest in office buildings to improve energy efficiency and the use of renewable energy resources to ensure the future competitiveness.