The evaluation of Groundnut Shell Ash (GSA) as a sustainable material for soil stabilization involves collecting and preparing both soil and GSA, followed by characterizing their physical and chemical properties. Various proportions of GSA are mixed with the soil, and the mixtures are tested through laboratory procedures such as compaction, Atterberg limits, unconfined compressive strength (UCS), and California Bearing Ratio (CBR) to assess improvements in strength and stability. The optimum GSA content is determined based on performance, ensuring it meets standard construction requirements. Proper curing, consistent mixing, and initial pilot testing are essential steps before confirming the effectiveness of GSA as a stabilizing agent in construction projects.