Our Services 

We can help you meet your compliance requirements whether you are building a new home, a multi residential development, a Commercial development or renovating an existing home.   If you require a quote please email us at enquiries@buildingsustainability.net.au with a set of plans and we will aim to get a competitive fee back to you within 24hrs.    

NatHERS Assessments 

The Nationwide House Energy Rating Scheme (NatHERS) provides homes with a star rating out of ten based on an estimate of a home’s potential (heating and cooling) energy use. By providing a ‘measuring tape’ for energy efficiency, NatHERS helps to make Australian homes more comfortable for their inhabitants and help residents to save on energy bills through smarter design choices. Often good design can reduce the amount of energy needed to keep a home comfortable with no or little additional construction cost.  NatHERS star ratings provide information about the thermal performance (heating and cooling needs) of a home’s construction. Star ratings are based on information about the home’s design, construction materials and the climate where it is being built. 

For more informations on NatHERS - http://www.nathers.gov.au/

BASIX Certificates

The Building Sustainability Index (BASIX) aims to deliver equitable, effective water and greenhouse gas reductions across the state.  Introduced on 1 July 2004, BASIX is an integrated part of the NSW planning system and it applies to all residential dwelling types.

The BASIX requirements for water and energy usage and thermal comfort performance apply to:

  • all new residential dwellings
  • alterations and additions to dwellings that cost $50,000 or more
  • swimming pools of 40,000 litres or more

For more information on BASIX - https://www.planningportal.nsw.gov.au/basix

Section J Reports

Section J Reports or Compliance Assessments are associated with Volume One of the Building Code of Australia ( BCA ), Class 2 to 9, and relates to Energy Efficiency measures of a building. The objective is to reduce greenhouse gas emission. Section J assessments are typically required to accompany an application for a construction certificate. 

BSA has provided section J reports since 2004 and we gained considerable expertise during that time.   We provide two types of reports and will recommended the most appropriate path for your assessment. 

Deemed-to-Satisfy (DTS)

Is where the design elements are assessed against the deemed to satisfy requirements of the NCC.  We use this method for simple projects which do not have an excessive amount of glazing. 



What is JV3?

JV3 is a Verification Method referenced in the BCA and is used as a Building Solution to determine compliance with all or parts of the Deemed to Satisfy conditions in accordance with BCA A0.4 and A0.5. Compliance with Section J is achieved when a proposed design is demonstrated to use less total energy than the same building if built to the DTS equirements (the reference building). Building simulations are performed using the ABCB approved software “Designbuilder” which uses the “EnergyPlus” thermal simulation engine.

Why use JV3?

JV3 is recommended to be applied when the DTS requirements become difficult to achieve or the cost of their application is prohibitive. In some instances JV3 is recommended as being the only practical way to determine compliance particularly when the DTS glazing requirements cannot be achieved.

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