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The non-for-profit Athena Institute offers
the only tools in North America for the
life cycle assessment of whole buildings and assemblies:

The Estimator is capable of modeling 95 per cent of the building stock in North
America—including industrial, institutional, office and residential designs—and
simulating over 1,000 assembly combinations. It is available from the Athena Institute,
as are various training and consulting options related to its use.

The EcoCalculator provides instant LIFE CYCLE ASSESSMENT results for more than 400
common building assemblies based on detailed assessments already conducted using
the Estimator. It is available as a free download from this website or the
Athena Institute.