Landslides and slope failures pose significant challenges in regions like Wadakkanchery in Thrissur district of Kerala State, India, where heavy rainfall and soil erosion threaten infrastructure stability. This study explores the integration of geo-composites with counterfort retaining walls to enhance slope stability. Geo-composites, known for their reinforcement, drainage, and filtration properties, are expected to improve the structural performance of retaining walls by reducing hydrostatic pressure and increasing soil retention. The research involves designing and analyzing two counterfort retaining wall models—one incorporating geo-composites and one without—to compare their structural efficiency. A crucial aspect of this study is soil property evaluation, we conducted index properties and engineering properties to assess parameters of the soil. These tests provide critical insights into soil behavior and its interaction with retaining structures. Through comprehensive soil analysis and stability assessments, this research investigates the influence of geo-composites on lateral earth pressure, drainage efficiency, and overall structural performance. The study is theoretical and design-based, focusing on analytical evaluations rather than real-world implementation or numerical simulations. By assessing the comparative advantages of geo-composite-integrated retaining walls and conducting in-depth soil investigations, this study offers valuable insights into the application of geosynthetics for slope stabilization. The findings contribute to the development of resilient infrastructure solutions for landslide-prone regions like Wadakkanchery, aiding engineers and policymakers in implementing effective and sustainable retaining wall designs.