This credit rewards projects for locating on high-priority sites, rather than developing greenfields or other environmentally sensitive areas.

Infill projects located in historic districts (Option 1) or high-priority redevelopment areas (Option 2) are great candidates for this credit. The credit language lists the acceptable high priority redevelopment areas. 

Option 3 focuses on redeveloping contaminated brownfield sites. Teams will need to clean up soil and groundwater contamination. Teams should also remediate asbestos and other contaminants inside buildings (demolished or remaining) as needed, but don't expect to get any credit for it here.

What’s New in LEED v4

• This credit uses many of the concepts previously contained in SSc3: Brownfield Redevelopment.
• LEED now provides project infill location options in historic districts and priority redevelopment areas.
• USGBC expanded site location options and now doesn’t limit projects to officially designated brownfields. Your project can qualify for this credit if the site is deemed as contaminated and requiring remediation by the authority with jurisdiction.