The 6th International Conference on Civil and Environmental Engineering for Sustainability (IConCEES 2021) was held virtually on the 15th and 16th of November 2021. Organised by the Faculty of Civil Engineering and Built Environment, Universiti Tun Hussein Onn Malaysia, the conference aims to gather international delegates from both the academia and the industry for sharing and exchange of current knowledge, ideas and trends in the fields of civil and environmental engineering to mobilise actions towards achieving sustainable development goals.