# Management 2.2 Thermal Performance Modelling - Multi-Dwelling Residential
# Applies to
All multi-residential 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 National Construction Code 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/bess6/glossary.html#thermally-similar-dwellings)](/tool-notes/bess6/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)