Abstract
Since beginning of 1990's, environmental assessment methods have been developed and implemented in many countries to enhance energy conservation building, green building and high performance building. Meanwhile, some environmental assessment methods and tools have not been used practically for its difficulties, and loss of time and cost. The purpose of this study is to develop a simplified assessment tool on a web site and to implement assessment, to know the possibility whether it works or not in practical. Major goal of developing web based assessment tool is to increase the awareness of designer, engineer and building owner about building environmental assessment tool and green building.