Chapter 1. The Sustainability Revolution; Chapter 2. The Challenge of Greening Existing Buildings; Chapter 3. Markets for Greening Existing Buildings; Chapter 4. Understanding Green Buildings and Rating Chapter 5. The Business Case for Greening Existing Buildings; Chapter 6. Costs of Greening Existing Buildings; Chapter 7. Meeting the Energy Retrofit Challenge; Chapter 8. Greening Site Management and Reducing Water Use; Chapter 9. Greening the Inside of the Building; Chapter 10. LEED Certification Challenges and Approaches; Chapter 11. Lessons Learned-Ten Best Practices for Greening Existing Buildings; Chapter 12. Greening the Future; Chapter 13. Case Studies; Appendix I: Certified LEED-EB Projects (All Versions); Appendix II: ENERGY STAR and the EU's Energy Performance of Buildings Directive; Appendix III: Interviewees; Appendix IV: Rating Systems for Greening Existing Buildings; Appendix V: Resources for Further Information; Index