Whole Life Carbon (WLC) refers to the total carbon emissions associated with a building or infrastructure asset over its entire lifecycle—from raw material extraction and construction to operation, maintenance, and eventual demolition or reuse. It’s a comprehensive metric used to assess and reduce the climate impact of the built environment.
WLC includes two major categories:
Some assessments also include:
User Carbon: Emissions from occupants’ activities
End-of-Life Carbon: Emissions from demolition, disposal, or recycling
Buildings account for ~40% of global greenhouse gas emissions annually
WLC assessments help identify hotspots and guide low-carbon design choices
They’re essential for meeting net-zero targets and complying with EU regulations like the Energy Performance of Buildings Directive (EPBD)
A WLCA is a standardized method to:
Measure total carbon emissions across all lifecycle stages
Compare design options and materials
Inform sustainable procurement and investment decisions
The RICS WLCA standard is widely adopted in Europe and globally for consistent carbon accounting.
The World Green Building Council (WorldGBC) promotes a Whole Life Carbon Vision to drive total sector decarbonization. It sets definitions and target dates for net-zero operational and whole life carbon buildings.