Since the discovery of iron-based superconductors, they have been subjects of intense research due to their exotic pairing symmetries and the potential to host Majorana fermions. Recently, scanning tunneling microscopy (STM) revealed surface superconductivity in KFe2​As2​ with a critical temperature threefold higher than that of the bulk. In this work, we construct a minimal model informed by experimental data and Density Functional Theory (DFT) calculations. We utilize this model to compute several observable quantities, including Quasiparticle Interference (QPI) patterns, and compare our results with experimental observations. Our findings provide a foundational theoretical framework for further investigation into the nature of surface superconductivity in iron-based systems.