Life Cycle Assessment on CO2 Reduction of Street House Reuse

To estimate the benefits of reuse building, this study selected 8 street-house cases from "Old House, New Life" reuse movement and calculated the average CO2 emissions of rebuilding and refinishing in their life cycle. The results indicated that the average CO2 emission is 103.14 kg- CO2 /m(2) before renovation, and 5.73 kg- CO2 /m(2) after renovation. The efficiency of CO2 emission reduction can be raised up to 60% and 70%. If the street houses extend their life span from 60 years to 90 years, the life cycle CO2 emissions can be reduced from the original 1.89 kg- CO2 /m(2). yr to 1.39 kg- CO2 / m(2). yr. It's advantageous not only to make the best of old houses, but to decrease the environmental load.