Our earth-based bricks absorb CO₂ throughout their life cycle and can be returned to the soil at end of life. Their properties are superior or comparable with commonly used building materials. This provides a practical and efficient solution to reaching net zero and even enables construction projects to become carbon negative. Our earth-based bricks are made using excavated soil, which would otherwise go to landfill. Lime is used as a binder/stabiliser to enhance the mechanical properties and durability of our bricks. Whilst conventional lime is produced at high temperatures, releasing significant CO₂ emissions, earth4Earth has developed a novel process for lime production where no direct CO₂ emissions are released. At end of life, our bricks can be crushed and returned to the earth for crop growth. The bricks are UKCA-marked and meets EN 771-1 standards with ≥10 MPa compressive strength Suitable for use in structural and non-structural walls in sustainable buildings.