This study is mainly considered in the points that follow, through the comparison of the Housing Survey, conducted every 5 years, and the statistics of building starts and losses about housing stocks according to construction material or type of building. 1. Comparing to the statistics of building starts, number of housing stocks about a category including steel frame houses is too few, and it about concrete block houses is too many. 2. The destruction ratios in stocks of wooden houses and tenement houses are greater than others in many periods. 3. Number of housing stocks estimated by the statistics of building starts applied "apparent destruction ratio" is very similar to it by the Housing Survey smoothed the results by "proportional destruction ratio".
