NatHERS Energy Report (Star Rating)
We use house plans and construction details to enter data into NatHERS Accredited Software to produce a star rating. The rating is based on scientific research by the CSIRO.
Good design is key to achieving a high star rating, so speak to an accredited assessor early in the design phase. They can advise on important factors such as house orientation, building materials, suitable appliances and construction, which may not be possible to change later.
Below is a general guide to ratings:
- a 0-star rated home is quite uncomfortable – too hot in summer and too cold in winter. It will require a lot of energy to heat and cool.
- a home reaching a 7-star rating will need some mechanical heating and cooling to keep it comfortable to live in.
- a 10-star home is very energy efficient. It will remain comfortable year-round, with limited, or no mechanical cooling or heating.
Whole Of Home Assessment
The new assessment builds on the thermal performance assessment by providing information about the energy use of the following appliances:
- Heating and cooling
- Hot water systems
- Lighting
- Pool/spa pumps
- Cooking and plug-in appliances
- On-site energy generation and storage.
The rating considers energy used for heating and cooling, and appliances, minus energy generated from solar panels, building a useful energy snapshot of energy costs as well as greenhouse gas emissions.
While the Whole of Home rating scale ranges from 0 to 100 (where 100 is a net zero energy value home), ratings above 100 are possible. One way that a home may rate over 100 is where a home generates more energy than it uses.
Residential DtS Report
Residential DtS compliance report contains a list of prescriptive insulation values and thermal properties for single dwelling houses that use common construction materials and methods. The Section 3.12- DtS report is an elemental provision including the minimum Total R-Values of roofs, walls and floors, the glazing allowances and the air movement requirements.
It is simple, low cost, and can usually be delivered in a couple of business days.
Section J
A Section J report provides documented proof that a commercial building design complies with the energy efficiency requirements of Section J in the National Construction Code (NCC). It’s a crucial part of gaining building approval in Australia for non-residential projects like offices, schools, warehouses, and public buildings.
Here’s what the report typically includes:
🧾 Key Inclusions
- Thermal performance of the building envelope (walls, roofs, floors, glazing)
- Insulation and R-values calculations
- Glazing performance (U-values and Solar Heat Gain Coefficients)
- Building sealing strategies to reduce air leakage
- Lighting systems and their energy consumption
- HVAC systems (heating, ventilation, air conditioning)
- Hot water systems and other energy-using equipment
- Energy monitoring provisions (if applicable)
- Compliance pathway used (Deemed-to-Satisfy, JV3, etc.)
- Supporting calculations and documentation to demonstrate compliance