Performance-Based Design is an approach which focuses on the objective of a building asset, in order to prescribe desired results instead of the way and the method to get things done, as it’s concepted in a traditional practice. In a Performance Based approach the focus of all decisions is on demand requirements and on required performance in use. So the supply chain offers building assets through estimated performance which should fulfill stated requirements. Performance in use have been verified, validated, evaluated, and at the moment this area needs further research. Such approach provides a methodology to develop tools and methods to set the whole life cycle Building Process, from the dealing phases to the procurement, to the construction and the evaluation of results.