Five Official Stages in Life Cycle of a Building

For a product’s EPD to comply with the most important environmental standard EN 15804, it must be able to measure its performance against environmental indicators for the five official stages in the life cycle of a building.

The checklist below gives the different modules identified in the standard for each of the five stages. The ‘product stage’ is mandatory as the impact of  production does not change based on how it is used.  The others are voluntary, determined by their installation, use and disposal.

Main Life Cycle Stages		Individual Life Cycle Modules listed in standard under categories A to D
1	Product Stage (Mandatory)	A1  – Raw material supply A2  –  Transport A3  – Manufacturing
2	Construction Stage	A4 – Transport A5 – Construction – Installation process
3.	Use Stage	B1 – Use B2 – Maintenance B3 – Repair B4 – Replacement B5 – Refurbishment B6 – Operational energy use B7 – Operational water use
4	End of Life Stage	C1 – De-construction demolition C2 – Transport C3 – Waste processing C4 – Disposal
5	Benefits and Loads Beyond the System Boundary	D – Reuse/Recovery and Recycling potential