Historic buildings were traditionally designed with many sustainable features that responded to climate and site.
Rehabilitating historic properties can also be a critical part of promoting energy efficiency by preserving the energy already represented by existing buildings rather than expending additional energy for new construction.
Current codes and many green building standards, however, do not always provide a clear path forward on how best to redevelop and revitalize historic and other existing buildings to achieve sustainable outcomes.
Communities that seek to both increase their sustainable investments and protect their historic assets must resolve standards and policies that can at times conflict, and which may render some projects financially infeasible.
How novel technologies such as the "Cool" and "Photocatalytic" materials technology could probably help?