ATHEN ATM Sustainable Materials Institute
A not-for-profit Institute, Athena follows common building materials from cradle-to-grave and calculates the environmental effects at each stage in the product‘s life cycle. ATHENA v2.0 Environmental Impact Estimator uses that data in a building systems context to capture the full environmental story for a conceptual building design.

Building for Environmental and Economic Sustainability (BEES 3.0)
This easy to use free software system assesses the following environmental impacts for building products: ozone depletion, smog, ecological and human toxicity, global warming, acid rain, natural resource depletion, indoor air quality and solid waste.

Energy Life Cycle Cost Analysis
ELCCA is a decision making tool for building owners and designers. The analysis accounts for initial costs associated with constructing or renovating a facility as well as the cost of owning and operating a facility over its useful life.

“Primer on Life Cycle Assessment for Sustainable Building Projects,“
Life Cycle Assessment (LCA) is an informed decision-making process that is applied to building components, design strategies, and other measures associated with building.
Paladino and Company, 2002

“Life Cycle Analysis of a Residential Home in Michigan,“
A 2,450 ft2 residential home built in Ann Arbor, Michigan was analyzed to determine total life cycle energy consumption of materials fabrication, construction, use and demolition over a 50 year period. Life cycle global warming potential (GWP) and life cycle costs were also determined. The home was selected because it is close to the average size of new homes built in the USand uses standard construction materials and techniques.
Steven Blanchard and Peter Reppe, Center for Sustainable Systems, University of Michigan. Report No. 1998-5, September, 1998