Part L: SAP calculations for new dwellings - (Newly constructed dwellings with no previous uses or residents) More information.
Part L: SAP calculations for converted dwellings - (Commercial premises to residential, like a barn conversion) More Information.
Part L: SAP calculations for extended dwellings - (To ensure the extended dwelling is still compliant) More Information.
Sustainability statement - (Local planning policies may require this) More information.
Part O: Dynamic Simulations for new dwellings - (Suitable for dwellings with ground floor bedrooms due to security restrictions) More information.
Part O: Simplified Calculations for new dwellings - (Suitable for dwellings where bedrooms windows are not accessible from the outside) More information.
Part G: Water Efficiency Calculations - More information.