Abstract
This paper aims at illustrating the effect of changes of household by household size and building type on energy consumption. Based future structural change forms of household, three possible cases are suggested. 1) Present trend change on architectural form ration of different household sizes; 2) Stays static on architectural form ration of different household sizes; 3) Maintains the same level of architectural form ration of entire household regardless of sizes. Result shows that single-person household rose 60% compares with that of 2010 and there will be an expectation of 0.85% energy reduction according to the movement promotion of household adapting household size. For future, this research will be applied to illustrate impact of additional measurement on residential space restriction which response to energy saving and creation effectiveness from household size to architectural forms.
