The 2011 off the Pacific Coast of Tohoku Earthquake took a heavy toll of lives and buildings,making headlines around the world.Although damage of buildings especially urban RC and SRC apartments due to earthquake motion are not well known,so that the tsunami after earthquake motion was unprecedented in its power and reach,they were hard to keep living for residents of the apartments because of their non-structural walls were cracked and broken.Although these damages may be small in the scheme of things,in fact,it is big and important matter for the residents.Most apartments in Japan set a rule that the damaged apartment is not able to any construct neither retrofit nor restore without getting every resident to agree.This study reports some buildings with remarkable damages and result of questionnaire survey including above problem collected 82 residents unions and an example of seismic response analysis.The result of survey and analysis shows that non-structural walls are damaged due to earthquake regardless of structure,furthermore,explains the importance of studies of non-structural walls.