Most of the community’s residential buildings fall into the non-engineered building (NEB) category, indicated by the lack of material quality and construction standards necessary to withstand earthquake loads. The research addresses this issue by highlighting the significance of adding anchor reinforcement to the beam-column joint of the NEB to increase its seismic resistance. The research was conducted using ATENA software, analyzing three models: the normal NEB-N model, the NEB-L90 model with a 90° anchorage angle, and the NEB-L45 model with a 45° anchorage angle. The findings indicate that the NEB-L45 model demonstrates a higher load capacity than the NEB-N and NEB-L90 models. Additionally, the probability of damage in the NEB-L45 model is lower than in the NEB-N and NEB-L90 models, suggesting that using 45° anchor reinforcement can effectively enhance the seismic performance of the NEB.