Microbial Induced Calcium Carbonate Precipitation (MICP) offers a sustainable and innovative method for soil stabilization, leveraging the natural processes of urease-producing bacteria like Sporosarcina ureilytica to precipitate calcium carbonate (CaCO₃) within soil matrices. This study demonstrates how MICP enhances soil stability and mechanical properties using a minimal nutrient supply of urea and calcium chloride. The initial precipitation forms amorphous calcium carbonate, which gradually transforms into stable crystalline structures such as calcite and aragonite, significantly improving compressive strength. Incorporating nano calcite further accelerates these processes, contributing to developing durable and environmentally friendly construction materials. MICP aligns with climate adaptation strategies, promoting infrastructure resilience while reducing environmental impact. Advanced testing methods such as XRD and SEM confirmed the gradual transformation and durability of the treated soil. This study underscores MICP’s potential as a low-carbon, cost-effective solution for sustainable construction.