Geosynthetics play a pivotal role in enhancing material behavior within civil engineering projects, particularly in structures such as retaining walls and slopes. This study explores the crucial role of geosynthetic materials in improving pullout characteristics within geotechnical engineering applications, backfilled with construction and demolition waste (CDW). Sand is selected as the ideal backfill material, and its properties, including gradation characteristics, specific gravity, and pull-out behavior with geosynthetics, are investigated. These characteristics are compared with those of the CDW material. Two types of CDW materials are chosen in this context: proportionated and nonproportionated. The main components—concrete, brick, and waste soil are combined in specific ratios to create proportionate CDW. Samples taken straight from the site are known as nonproportionated samples. The greater pull-out force was obtained for sand in dense condition and for CDW, at its optimum moisture condition. Considering the pull-out characteristics, the study gives a detailed comparison between the conventional and proposed CDW materials and suggest that CDW can act as a substitute for sand in backfill applications. The findings from this study not only contribute to the body of knowledge in geotechnical engineering but also provide practical insights for optimizing the use of geosynthetic reinforcements in backfill applications.