BASIX applies to all new multiple home developments in NSW. This includes units, townhouse rows and subdivisions.
The BASIX assessment tool assesses the sustainability of building designs for multiple home developments by examining the Water, Energy and Thermal Comfort. The BASIX assessment tool multi-dwelling section is specifically designed to suit larger residential developments, especially for unit blocks with common areas such as car parks, lifts and shared gardens which can require significant amounts of water and energy.
Checklist
Before using the BASIX assessment tool please consult the Multi-dwelling checklist to ensure that you have everything that you need to complete the assessment:
Multi-dwelling checklist (pdf 1mb) 
Sustainable multi-unit features encouraged by BASIX
Some of the sustainable mutli-unit features encouraged by BASIX - click on the image for a larger image with a explanatory legend
Energy
- Light shelves for improved natural lighting
- Solar hot water system
- Natural light in kitchen and bathroom areas
- Compact fluorescent lights with timers in common area lighting
- Energy efficient appliances such as refrigerators
- Ceiling fans for cooling
- Carbon monoxide monitoring to regulate carpark ventilation
- Insulated hot water pipe
- Energy efficient pool and spa heating
- Clothes line on louvred balcony to reduce need for electric drying
- On-site electricity and heat generation (cogeneration system)
Water
- Storm/rainwater col lection for toilet and garden use
- 4 STAR rated appliances such as washing machines and dishwashers
- 3 STAR rated water fixtures - dual flush toilets, shower heads and taps
- Native, low water use landscaping
Thermal Comfort
- Passive solar orientation
- Insulation in ceiling and walls
- Cross ventilation allowing air to flow through units, reducing the need for air conditioning
- Performance glass
- Roof overhang, window eaves, pergolas and louvres to reduce sun's heat