This study clarified utilization pattern of outside common space by visit hearing investigation to 2,226 persons (988 families) with extracted 3 housing estates that have “outside common space of the connecting-core type” build in 1970s, 1980s, 1990s public housing estates in Taipei city. Analysis items are “utilization rate”, “utilization pattern”, “act contents”, “utilization time”, “utilization frequency”, and “utilization place”. We analyzed according to sex / age / dwelling area. The conclusions are as following:
1. Utilization rate is very high and utilization pattern is various.
2. As residents become old, utilization is more active.
3. There is a utility graduation between the large core and some small cores.
