1994 Volume 59 Issue 465 Pages 123-132
This study is a research of office buildings stock and life time estimation in four wards of Tokyo; Chiyoda, Minato, Shinjuku and Taito, which are well known as main business area of Tokyo. Data were obtaind from the ledgers for fixed properties of Tokyo Metropolis at the date of Jan. 1st, 1991. Total number of office building units in the four wards was 10,854 and total floor area was about 26 million square meters. Most of the buildings were built after 1960 and those built before the World War II only remain in a very small amout. Estimated life time of whole buildings, in which a half of the cohot will demolish, is 36.20 years.