BASIX tool upgrades now live

Additional functionality 

• Data is now retained when changing the thermal performance method, for example when a user switches between Simulation and DIY method  
• Help Notes and information links have been updated and improved  
• Certificates and reports for new homes will now show:  
  • The thermal performance method on the first page  
  • Full details of solar photovoltaic systems for multi-dwelling projects (if applicable)  
  • The number of straw bale panels (if applicable)  
• Clearer guidance is now available for completing the materials section for new home multi-dwelling projects that have separate buildings with shared common areas  

Greater flexibility

For new homes:  

• Users can now select from different grades of concrete if they have selected low-emissions concrete as the internal wall type  
• For homes in postcode 2015, users can now select the ‘Green Square Town Centre’ option for ‘reticulated alternative water supply’  
• For multi-dwelling projects, users can now request to have up to 1,000 dwellings included on a single BASIX Certificate. These can be a mix of single dwellings, duplexes, townhouses or apartments

For alterations and additions:

• Expanded glazing options are now available with low solar heat gain coefficient values  

Technical updates 

For new homes:  

• The BASIX standards version has changed from v4.03 to v4.04 to reflect all the changes outlined, but 'in progress' projects won't be affected  
• For bathroom, kitchen and laundry ventilation systems, there is no longer an option for directing exhaust into the roof space

Other changes

• Showerheads consuming between 4.5 to 6 litres per minute now appear as 5 stars.
• For all projects, users must now declare that all the information entered is accurate before generating a BASIX certificate.

For more information, contact the BASIX support team.