The historical buildings are of great importance, as they represent the architectural heritage and the image of history.Accurate structural analysis of stone buildings is a real challenge, as the mechanical properties of stone and mortarunits are different and unavailable. The aim of the research is assessment historical stone buildings. An experimentalstudy was conducted to determine the mechanical properties of stone building materials and to modelling validation.A numerical modelling was carried out through a non-linear static analysis based on a macro finite element model,using ANSYS. The result obtained of the model of Zahdeh building is that building can bear its loads in its currentcondition, and it also has the ability to bear loads equivalent to two floors. The proposed methods, are suitable forstructural assessment process and can be applied to similar building models to preserve, both architectural heritageand historic buildings.