The study investigates the feasibility of repurposing soils contaminated by military activity in Kharkiv Oblast, Ukraine, as sustainable feedstock for post-conflict reconstruction. While research in Ukraine has centered on agricultural and ecological impacts of soil contamination, its role in post-war reconstruction remains largely unexamined. In this study nine soil samples from two soil profiles were analysed for heavy-metal content. After conducting particle-size distribution analysis and performing field tests for earth-based materials on the loess sublayer from Kharkiv Oblast, two remediation strategies were piloted. The dilution strategy blends contaminated soils with secondary aggregates to reduce heavy-metal concentrations below regulatory thresholds while producing prototypes of compressed earth blocks (CEB). The encapsulation strategy encloses the contaminated core within protective insulation and clay or lime plaster layers, immobilizing residual metals through sorption and pH buffering. Both approaches demonstrated technical viability but face regulatory and methodological hurdles. Local resource constraints and the urgent need for standardized long-term leachate and dust-release protocols are also highlighted. These findings indicate that war-impacted soils can be transformed into safe, locally sourced building materials, thereby reducing landfill burdens and supporting low-carbon reconstruction in Ukraine.