As a research and development institution, integrated in the Portuguese National System of Science and Technology, the National Laboratory of Civil Engineering (LNEC) is well positioned and fitted with human and material resources to develop studies and other actions towards the improvement of construction sustainability.

The multiple skills in diversified scientific areas (engineering, physics, chemistry, geology, architecture, urbanism, social sciences) of LNEC researchers are particularly suitable to the interdisciplinary and multidisciplinary approach required by environmental sustainability matters. Besides a brief reference to past pioneering studies on this area, the paper describes LNEC present and future research lines on sustainable construction. These research lines include studies carried out on several transversal themes such as environment and sustainability, conservation and rehabilitation, quality in construction, human and social-economic dimensions, and risk and safety. To conclude, some final remarks are presented.