The use of excavated material as a building material is a circular and carbon neutral solution that is gaining interest in Europe. However, there are currently many challenges that stand in the way of making labor-intensive and costly rammed earth scalable in the construction industry. To address this, Impact Printing is developing an efficient robotic on-site construction process that uses a customized material consisting of local excavated material with low levels of mineral admixtures. The development of a digital design and construction strategy for the realization of this construction method should lead to a high degree of automation and reduce the C02 content to less than 12 kg CO2 per m2, which would mean a reduction of more than 50% compared to low-carbon concrete walls. The work with the CBI Booster is intended to strengthen the cooperation with industry and the business case.