The construction industry significantly contributes to global resource con-sumption and carbon emissions, making sustainable alternatives essential for reducing envir-onmental impact. This study explores the feasibility of adapting earth-based constructiontechniques, such as rammed earth, to Sweden’s colder climate by drawing insights from Medi-terranean regions, particularly Portugal. The research assesses earth materials’ thermal per-formance, durability, and moisture resistance through an experimental living lab in Sweden,where a rammed earth wall was built under local climatic conditions. Life Cycle Assessment(LCA) was employed to compare the environmental impact of earth construction against con-ventional materials like concrete and steel, focusing on Global Warming Potential (GWP).The results indicate that earth construction, particularly in Portugal, offers significant envir-onmental benefits, including up to 50% lower GWP compared to conventional materials.However, challenges such as higher labour costs in Sweden, extended drying times, and thelack of technical standards for earth-based construction hinder widespread adoption. Thispaper contributes to the growing body of knowledge on sustainable construction by proposinginnovative methodologies that integrate traditional earth techniques with modern technolo-gies. Future research should focus on improving material durability, developing technicalcodes for earth construction, and exploring mechanisation to enhance scalability and cost-efficiency, aiming to make earth-based construction a viable alternative in colder climates.