info icon_32pxNew to BASIX?

If you are building a new home, or undertaking renovations of $50,000 or more, you will need a BASIX certificate.

  Find out how to get started

 

info icon_32pxWhat is BASIX?

BASIX is one of the strongest sustainable planning measures to be undertaken in Australia. BASIX aims to make all residential dwelling types in NSW energy and water efficient.

  Learn more

 

info icon_32pxDesign principles

BASIX encourages you to reduce your energy use through specific design strategies for lighting, heating, cooling and ventilation. View the full list of Energy design principles.

  Read more

 

 

 New BASIX energy targets

 
The BASIX energy targets and thermal comfort stringency changed on 1 July 2017. 

A series of frequently asked questions that reflect the key issues raised by users can be found in our help articles.

  Read more

 

The Building Sustainability Index (BASIX) aims to deliver equitable, effective water and greenhouse gas reductions across the state. BASIX is one of the strongest sustainable planning measures to be undertaken in Australia.

BASIX and the planning system

An integrated part of the planning system, BASIX is implemented under the Environmental Planning and Assessment Act. BASIX applies to all residential dwelling types and is part of the development application process in NSW.

BASIX assessment

BASIX is assessed online using the BASIX assessment tool. The tool checks elements of a proposed design against sustainability targets.

Outcomes

BASIX reduces water and energy consumption in homes across NSW. These environmental outcomes also provide a long term financial saving for the homeowner – and a valuable contribution to the sustainable future of our communities. 

 

 

 

 

Home page

Images:

currently 225 (w) x X 142 (h)

should be 215px (w) X 142 (h)

Log in box = 215w x 280*

Max width for image = 186px.

Publications image 215x 180

Icons = 25x25

Article/category page

Log-in box: 187 x332*

Max width for image = 158

Speech bubble modules: 187x115*

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Width of main column = 556px

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Home page

Images:

currently 225 (w) x X 142 (h)

should be 215px (w) X 142 (h)

Log in box = 215w x 280*

Max width for image = 186px

Publications image 215x 180

Icons = 25x25

Article/category page

Log-in box: 187 x332*

Max width for image = 158

Speech bubble modules: 187x115*

Max width for image = 150

Width of main column = 556px

Image box full = 556 – padding 10px l&r – 1px border l&r= 532

Image box half= 556 - padding 10px l&r – 1px border l&r –gutter 20px = 230

*will vary according to how much content in box

Stay in touch with the latest BASIX developments through the following channels:

To get started with your BASIX assessment you will need to log in to the BASIX assessment tool - available on the right hand side of this website. If a first time user you will need to create an account.

Once you have logged in to the BASIX assessment tool you will be asked for project details and information relating to the proposed design - whether it be a single dwelling, multi-dwelling or alteration and addition.

To see what an ideal BASIX project looks like and to view checklists of information required to complete the BASIX assessment, visit the relevant building type section below:

Language assistance

If you or someone you know needs Language assistance we have several BASIX
fact sheets available in other languages to assist you:

 Read BASIX fact sheets in other languages

Support

If you are having trouble using the BASIX assessment tool or have an urgent enquiry please contact the BASIX helpdesk. Contact details are available in the Support section of this website.

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Information and samples for editors and authors.

Contains page set to to test different template themes etc.

BASIX help notes are designed to assist and guide you through the BASIX assessment tool. You will find that the help notes are linked to from the BASIX assessment tool in the form of question mark icons. You can also view the notes self directed. For ease of use we have also made the help notes accessible from the BASIX website. 

BASIX help notes are categorised under the following sections:

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The Water section of BASIX aims to reduce the potable water consumption of all new residential developments. The benchmark is 90,340 litres of water per person per year (or 247 litres per person per day), which was the average potable water consumption of a pre-BASIX home.

The water reduction target ranges from 40% to 0% depending on the climatic zone. The 40% reduction target applies to 90% of new residential development and 98% of high-growth areas. The BASIX targets are determined from data provided by state and federal energy and water utilities, as well as long-term climate data from the Bureau of Meteorology.

Water consumption and savings will be assessed based on:

• landscaping;

• fittings and fixtures;

• alternative water sources and how they are used;

• pools and outdoor spas;

• other energy uses; and

• central systems and common areas.

Reducing the demand for hot water by installing efficient showerheads and taps will also reduce the energy required for water heating and improve your score in the Energy section..

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BASIX assesses fittings, fixtures and appliances based on:

WELS water efficiency rating for all showerheads;

WELS water efficiency rating for all toilets;

WELS water efficiency rating for all kitchen and bathroom taps; and

for multi-dwelling unit developments (but not groups of single dwellings or townhouses), the water efficiency of water-using appliances.

Please note that the rating selected MUST match the rating of the fittings and fixtures installed in the development and this needs to be signed off by the certifier.

In the BASIX multi-unit tool the values selected will be applied to all dwellings in the dwelling type. If you wish to apply values to specific dwellings, select them individually using the checkbox to the left of the dwelling numbers.

 

• rainwater– collected from roof areas and stored in a rainwater tank;

• stormwater– collected from trafficable surfaces and stored in a stormwater tank;

• greywater– diversion and treatment systems can be used to collect and re-use wastewater from the bathroom and laundry;

• private dams (single dwellings only)– for toilet flushing, laundry, garden irrigation;

• reticulated alternative water supply (approved multi-dwelling developments only)– recycled wastewater supplied by a water authority or central authority via a reticulated system to individual lots for non-potable use;

• central on-site recycled water systems (multi-dwelling developments only)– for toilet flushing, laundry, garden irrigation; and

• hot water recirculation and diversion– collecting water from hot water fittings until the water reaches the desired temperature.

For each water use in the development, you must nominate a water source. The source may be mains-supplied potable water or one of the recognised alternative water sources.

Alternative water sources are optional, but in most cases a dwelling will need to nominate an alternative water source in order to achieve the required water target.

Note: There are limits to alternative water use for some alternative water sources.

BASIX does not recognise the following water supplies as alternative water sources. Please refer to the relevant help notes for further information:

• Groundwater.

• River or 'Raw' Water

• Onsite Sewage Management Systems

BASIX takes into account the on-going water usage for any new pools or outdoor spas included in your development application. You can reduce the water use associated with a pool or spa by;

• Installing a permanent pool or spa cover

• Shading the pool or spa area

• Selecting a rainwater tank for top-up

See also Pools and Outdoor Spas (Energy Usage).

BASIX needs to know:

- the location of the pool (indoors or outdoors).

- the size (volume) of the pool or spa in kilolitres.

- whether the pool or spa has a cover and/or is shaded.

-if you will be using a tap connected to a rainwater tank for pool or spa top-up (selection found on the Alternative Water Details page).

In order to obtain a BASIX Certificate confirming compliance with the NSW Government's sustainability requirements, a residential development proposal is required to use up to 40% less potable water than the average home 'pre-BASIX' home benchmark of 90,340 litres of water per person per year or 247 litres per person per day.

The water target varies for different climatic zones in NSW. It ranges from 40 to 0 across depending on the location of the house or unit. See Water Target Zones.

Key facts

• No new home built in NSW will use more water than the current state average.

• The 40% water target covers 90% of new residential development, which represents 98% of NSW population growth.

• Developments in areas covered by the 0% target still need to reduce water consumption in order to meet the state average water use benchmark.

The BASIX targets are determined from data provided by state and federal energy and water utilities, as well as long-term climate data from the Bureau of Meteorology.

General tips for reaching water targets

• Select the highest WELS rated fittings and fixtures available for your development, including efficient showerheads, dual flush toilets, and flow regulators in your taps

• Install an alternative water supply, such as a rainwater tank and connect it for internal use (toilets and/or laundry).

• Install an alternative water supply for garden use and include low water use species as part of your landscaping plan.

• Include shading and a permanent cover for any pool or outdoor spa.

• There are a number of additional options available to multi-unit developments.

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This information will help you fill out the project details section of the BASIX assessment tool:

Project address
Project type
Site details 

 

NOTE: The help notes listed below only apply to certificates generated prior to 1 July 2017, or revision of those certificates if validly lodged with the consent authority.