Rainfall-induced landslides are prevalent in tropical and subtropical regions. The recent global climatic changes aggravated the situation with anomalous rainfall events. These occurrences have resulted in numerous landslides, causing significant loss of life. This study focuses on a specific area in northeastern India, characterized by buildings constructed on slopes and identified as vulnerable to instability. An analysis revealed that numerous structures obstruct the natural drainage of rainwater, contributing to increased saturation and reduced shear strength of the soil. Utilizing borehole data, the study examined lateritic soil with a dry density of 1.3 g/cm3. Numerical simulations indicated that without intervention, the factor of safety (FoS) during critical rainfall was 0.98. Various mitigation measures were implemented, including erosion control mats and mechanically stabilized earth (MSE) walls, which significantly improved the FoS to 1.157 and 1.333, respectively. The implementation of MSE walls effectively deepened the critical slip surface, thereby mitigating the risk of rainfall-induced landslides while enhancing the safety of the existing structures.