The construction industry’s high contribution to global greenhouse gas emissions is well documented. This has driven many countries to develop strategies aiming to achieve net-zero emissions in their built environments. Currently, the development of near-zero construction materials is still a niche, especially for insulation materials. In this paper, we explore the environmental impacts from the production of fast-growing bio-based construction materials and their potential transport at regional, national and international scales with the use of prospective life cycle assessment.