Which 10 real estate developers or companies are leading the way in sustainable and energy-efficient mixed-use residential projects?

1. The Related Companies
2. Boston Properties
3. Cadence McShane Construction Company
4. Skanska
5. Forest City Ratner Companies
6. Lendlease
7. Hines
8. Brookfield Properties
9. Gerding Edlen
10. Kilroy Realty Corporation