Abstract
A calculation tool is developed to estimate reduction in CO_2 emission from Governmental facilities and schools constructed according to Aomori Prefectural Guideline on Environmentally friendly Architectural Design. This simplified LCA tool, that also calculates initial and lifecycle costs, is so easy to operate that user only select measures to reduce environmental loadings through planning process. CO_2 emission from governmental facilities by the year 2010 was predicted with combination of the environmental techniques used in new construction, existing buildings and renovation projects. The Aomori government increased its budget as additional cost to introduce these measures for new construction of governmental facilities