1. Postdoctoral Research Fellow, Economics of the Sustainable Built Environment Lab, School of Building Construction and School of Civil and Environmental Engineering, Georgia Institute of Technology, 280 Ferst Dr., Atlanta, GA 30332-0680.
2. Associate Professor and Brook Byers Institute for Sustainable Systems Fellow, Director, Economics of Sustainable Built Environment Lab, School of Building Construction and School of Civil and Environmental Engineering, Georgia Institute of Technology, 280 Ferst Dr., Atlanta, GA 30332-0680 (corresponding author).