As the infrastructure development in the hilly region is going through at a rapid pace, to meet the needs of this demand most of the time shallow foundations are preferably constructed on the hill slope. The bearing capacity of these foundations on rock slopes is mainly influenced by various factors, like rock slope material properties, slope geometry, slope height, and the foundation's setback distance from the crest. The effect of the foundation's setback distance and slope height on its bearing capacity is rarely studied. In this study, a numerical investigation has been conducted to evaluate the bearing capacity of strip footing considering the effect of setback distance ratio (b/B) and slope height ratio (H/B) by utilizing upper bound solution for finite element limit analysis in OptumG2 software. On top surface of the rock slope, a strip footing is placed at varying setback distances from the slope's crest keeping the rock material properties constant, as defined by Hoek–Brown model parameters GSI, mi, and D values. Different homogeneous slopes of varying inclination angle (β) and slope height (H) have been considered for parametric study. The results are presented as variation of slope against setback distance, considering the effect of slope height, for all Hoek–Brown model parameters. Additionally, the critical setback distances have also been estimated for all the considered cases.