In recent years EU environmental policy is aimed to build a closer relationship between environmental and innovation policy and a particular attention is focused for the promotion of ecoinnovation in construction sector. Studies done by so far points to a lack of relevant data and indicators that have hampered the development of policies and measures for promoting ecoinnovation. Different barriers and drivers for ecoinnovation discloses very complex and dynamic system of interrelations between factors that affects the diffusion of ecoinnovations in buildings energy efficiency market. Sustainable energy consumption in buildings and ecoinnovation diffusion involves a complex, socially embedded and socially constructed market. Further research will focus on application of a system dynamics approach to explore the short, medium and long term impact of different policies promoting ecoinnovations in building energy efficiency sector.