The paper presents the results of the comparison between two different directions in slope stability analysis for a particular example and the way these results can affect various parameters. Different methods were used to establish the slope stability of a 56.00 meter high slope. The calculations of the safety factor were made using the conventional methods of Bishop, Fellenius and Bell. The results of applying these conventional methods were compared with the calculations performed by the FEM analysis using shear resistance reduction (ϕ, c – reduction). The comparison, analysis and assessment of the results obtained when applying different methods for solving the same problem is an important factor in designing buildings on steep slopes.