Answer your friend who claims that (1) Family members per household decreases largely with the death old people and household numbers are largely dependent on the early marriages, especially in population concentrated areas (Table 1). Households Table 1: % Change 1970-2015 Family Meinbers Per Household -32 -28 76 116 Japan Average Population Concentrated Area Other Areas 18 -32 (2) Higher construction activity of condominiums in Tokyo is determined by the new energy efficient construction techniques by the construction companies. (3) Tokyo-to housing market completely follows Japan's other prefectures both a) in supply (housing starts) and b) demand (vacancy rate) (Table 2 and Table 3). Housing Start Population Vacancy Population Rate Table 2: Housing Start (No. of Constructions) and Population (in Thousands) Table 3: Vacancy Rate (%) and Population (in Thousands) Aomori-ken Hokkaido Osaka-fu Tokyo-to 5,000 38,000 65,000 145,000 1.800 6,000 8.500 13,000 Aomori-ken Hokkaido Osaka-fu Tokyo-to 14 15 15 13 1,800 6,000 8.500 13,000 (4) Decline in house prices is likely to affect household balance sheets equally across Japan leading to decrease wealth inequality a) between urban and rural areas and b intergenerationally. (5) The existence of vacant houses (Akiya) mainly arise from unusual education practices of young people who use rented houses in Tokyo-to and other big prefectures only for attending college and university exams, but not for lectures all the semester (Table 4). Table 4: Tokyo-to Osaka-fu Hokkaido Aomori-ken 138 57 38 17 Number of Colleges and Universities Answer your friend who claims that (1) Family members per household decreases largely with the death old people and household numbers are largely dependent on the early marriages, especially in population concentrated areas (Table 1). Households Table 1: % Change 1970-2015 Family Meinbers Per Household -32 -28 76 116 Japan Average Population Concentrated Area Other Areas 18 -32 (2) Higher construction activity of condominiums in Tokyo is determined by the new energy efficient construction techniques by the construction companies. (3) Tokyo-to housing market completely follows Japan's other prefectures both a) in supply (housing starts) and b) demand (vacancy rate) (Table 2 and Table 3). Housing Start Population Vacancy Population Rate Table 2: Housing Start (No. of Constructions) and Population (in Thousands) Table 3: Vacancy Rate (%) and Population (in Thousands) Aomori-ken Hokkaido Osaka-fu Tokyo-to 5,000 38,000 65,000 145,000 1.800 6,000 8.500 13,000 Aomori-ken Hokkaido Osaka-fu Tokyo-to 14 15 15 13 1,800 6,000 8.500 13,000 (4) Decline in house prices is likely to affect household balance sheets equally across Japan leading to decrease wealth inequality a) between urban and rural areas and b intergenerationally. (5) The existence of vacant houses (Akiya) mainly arise from unusual education practices of young people who use rented houses in Tokyo-to and other big prefectures only for attending college and university exams, but not for lectures all the semester (Table 4). Table 4: Tokyo-to Osaka-fu Hokkaido Aomori-ken 138 57 38 17 Number of Colleges and Universities