Idealization, a very high level view, is defined here as looking at the possibilities of integrating Green socially responsible requirements with Lean principles of construction practices with well-developed Unifying Models, such as Building Information Modeling (BIM). BIM, Lean, and Green (BLG) will allow a rapid prototyping of design and construction, the integration of drawings, specifications, and manufacturing in a Green best practice ambient that employs benchmarked Lean principles. This chapter explains our propositions on Green as a concept that gives direction on what to do right (effectiveness), on Lean that captures how to do it right (efficiently), and on BIM as an enabling platform that will facilitate the implementation of this effort. The integration of this concept addresses the quest for economically viable construction projects with the purpose of finding the best optimum performance. We consider the design as a theory, the project as an experiment, and the resulting products as a test that validates the theory. BLG allows for multiple executions of a theory to find the best option, and then test it against the final product. This chapter contributes to the body of knowledge but does not cover all aspects of the subject.