BASIX Certificate - New South Wales


You will require this certificate if you intend to submit a development application to a New South Wales local Council to:

  • Construct a new residential dwelling (such as single house, dual occupancy, townhouse or multi-unit);
  • Alter, enlarge or extend buildings with more than one dwelling (other than hotels or motels); or
  • Undertake a development for the purpose of building a large swimming pool or spa.

A certificate is issued once a Building Sustainability Index (BASIX) assessment has been satisfactorily completed, using the on-line tool. BASIX ensures new homes are designed and built to use less potable water and produce fewer greenhouse gas emissions.

You are responsible for completing the assessment, ensuring the BASIX commitments are clearly marked on the plans, and submitting the BASIX Certificate with the development application.

Please consult the Contact Officer for more information.

Service type


A licence defines the need to obtain recognition / certification and registration to undertake a certain business activity.

Eligibility Requirements

In order to complete a BASIX assessment, you must enter information identifying and describing the proposal, for example:

  • Project name, address, lot number and council area;
  • Project type (for example detached house, dual occupancy dwelling);
  • Site area, gross floor area, roof area and number of bedrooms.

Please see the Data Input Checklist on the website for full details.




Fees Details for this service in table format.

Task Type Description
Apply Application

Fees will vary depending on your circumstances. Please consult the Contact Officer for more information.

Other resources

Administering agency

Department of Planning and Environment

BASIX Sustainability Unit

Contact details

Contact Email, Phone and Address Details for this service in simple two column table format, header then data.


Operating address: 23-33 Bridge Street
New South Wales 2000
Mailing address: GPO BOX 39
Sydney, New South Wales 2001
Phone: 1300 650 908
Fax: 02 9228 6544