<p>Due to historical, social, and geographical factors, a large low-income population resides in elevated topography areas of the Metropolitan Region of Recife, Brazil, often without adequate conditions for safe housing construction. To mitigate landslide risks, various stabilization structures, such as retaining walls, steel-reinforced mortar coatings, and soil nailing, have been implemented. However, the comparative effectiveness of these solutions, particularly the dual role of steel-reinforced mortar coating (i.e., waterproofing and mechanical reinforcement) under the influence of soil suction and rainfall infiltration, remains poorly understood. This study aims to evaluate the mechanical and hydraulic influence of these structures on slope stability using the finite element method. The analysis, conducted with RS2 software, employs the Strength Reduction Method and is based on data from laboratory tests, boreholes, and literature, considering dry conditions, rainfall scenarios, and cases without considering suction. The results show that in dry conditions, none of the structures significantly affected the critical strength reduction factor (SRF) due to high soil suction. Under rainfall, the steel-reinforced mortar coating acted primarily as a waterproofing layer that helped maintain suction but did not provide significant mechanical stability, a finding corroborated by the unchanged SRF in the scenario without suction. In contrast, soil nailing proved to be the most effective solution, enhancing slope stability under all conditions by providing mechanical reinforcement and deepening the critical slip surface. It is concluded that reliance on steel-reinforced mortar coating as a retaining solution is risky, whereas soil nailing represents a more robust solution for ensuring slope stability in Recife.</p>