- L1 Ground treatment and retention
- L2 Complete construction entities & components
- L3 Structural space & division products
- L4 Access, barrier & circulation products
- L5 Coverings, claddings, linings
- L6 General purpose construction fabric products
- L7 Services
- Rainwater harvesting
- Grey water recycling
- Water treatment
- Sustainable water irrigation
- Taps
- Showers
- Waterless urinals
- WCs
- Above / below ground waste pipes
- Rainwater pipes and fittings
- Channels, gullies and gratings
- Wind turbines
- Photovoltaic (PV) cells, modules
- Lighting
- Boilers and stoves
- Solar hot water collectors
- Heat pumps and exchangers
- Ventilation / extraction
- Underfloor heating
- Services supports and enclosure
- L8 Fixtures & fittings