# Management 2.2 Thermal Performance Modelling - Multi-Dwelling Residential
# Applies to
Multi-unit and multi-dwelling development
# Objective
To encourage and recognise developments that use thermal modelling to inform passive design at the early design stage
# Summary
Points are awarded where, utilising a NatHERS accredited thermal performance model, it is demonstrated that the development meets or exceeds the BCA 6 star average and that no unit falls below the 5 star minimum rating requirement. Use building documentation and initial building fabric assumptions to undertake a thermal performance model, demonstrating that the building meets or exceeds the 6 star average and 5 star minimum energy rating requirement.
Note this credit is awarded for undertaking this early modelling. Demonstrating improvement above the Building Code of Australia requirements is awarded points in the Energy category.
# Documentation & evidence required
- Documentation that demonstrates that a minimum 6 star energy efficiency standard has been achieved or exceeded for a representative sample of dwellings including [[thermally similar dwellings](/tool-notes/bess7/glossary.html#thermally-similar-dwellings)](/tool-notes/bess7/glossary.html#thermally-similar-dwellings). If dwellings have been input as thermally similar groups, a site plan or similar drawing should be provided showing which dwellings have been grouped together. Refer to the Overview section in Toolnotes for more information about dwelling grouping.
- Documentation is to include a summary of the building fabric assumptions.
# Further Information
- NatHERS - Nationwide House Energy Rating Scheme (opens new window)
- 6 Star Standard, Victorian Building Authority (opens new window)
- Energy Use and [Passive Design , Your Home Technical Manual](http://www.yourhome.gov.au)
- Building Designers Association of Victoria (opens new window)
- Australian Building Sustainability Association (ABSA) (opens new window)