The paper presents the damage assessment procedure and the seismic assessment of a brick masonry building in the center of Zagreb that was damaged in the earthquake on March 22, 2020. The structure was calculated using the linear static response spectrum met hod in the ETABS 20 software package. As a n introduction, the load analysis was done and a preliminary seismic assessment of the building. The dynamic features of the building (vibration modes and natural periods of the structure) were determined by modal analysis. After that, the seismic resistance of the walls to four types of failure in the plane and the bearing capacity of the lintel against sliding was checked. The seismic action was tested for resistance with a return period of 95 years (renovation le vel 2), and the bearing capacity of the out of plane walls was not examined. After obtaining the corresponding internal forces values from the model, a tabular and graphical representation of the usability of all elements was created based on the recorded data. The positions of critical axes and elements were determined by analyzing the obtained results, and a review of the possible causes of the failure was conducted Structure displacements, base shear forces, and foundation pressures on the ground were a lso analyzed in the work.