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The assessment process

To help both maintain and improve the BASIX system, the NSW Department of Planning & Environment charges a fee for the issuing of a BASIX certificate.

How the BASIX certificate fee applies

Below is a table showing the maximum fees payable.

Type of Development


Single dwelling



$80 (for first two dwellings)
$35 (for each dwelling more than two dwellings) 

Residential flat building

Variable - depends on number of units

Alteration and additions

$25 for each dwelling

Cost calculator

To work out the required fee please use the BASIX cost calculator spreadsheet, available in excel format:

BASIX cost calculator spreadsheet

Last updated: 14/09/2022