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Information sheets

HIA information sheets cover a wide range of industry topics. Prepared by HIA information specialists, they are designed to help HIA members answer questions about a variety of complex areas. You can search by category. Members can also talk to HIA for additional help and support.


  • ABCB Sanitary Facilities Calculator – Now Live

    A common question HIA receives in the design & use of Class 2-9 buildings is - how many toilets, hand basins, accessible facilities, etc. do I need to provide for X number of people? To assist you to better understand and apply the sanitary and other facilities provisions, the ABCB have developed a "Sanitary Facilities Calculator" which helps to calculate this for you.

  • BASIX – what is it and what has changed (334KB) This item/page is locked

    This information sheet provides an overview of BASIX and details the changes to BASIX and how it will affect your projects.

  • BCA Energy efficiency compliance options (284KB) This item/page is locked

    This information sheet provides an overview of the different BCA compliance pathways for meeting the energy efficiency requirements.

  • BCA Gutter Overflow provisions (322KB) This item/page is locked

    This information sheet provides an overview of the BCA gutter overflow requirements that were introduced in 2016.

  • Building Permit Amendments and the Planning Permit - Vic

    HIA often receives calls from members raising concern where a minor amendment occurs to the building of a home. The main issue is the inconsistency in the way relevant building surveyors approach dealing with a minor variation. The Victorian Building Authority (VBA) have two documents on their website that provide advice on planning and building consistency.

  • Bushfire standard now available

    Bushfire standard now available at no direct cost for users HIA recently advised members that they will have easier access to the bushfire construction standard AS 3959 following an agreement by Standards Australia to waive the cost for access to the standard.

  • Certification and data reporting (NSW) (260KB)

    This information sheet provides an overview of the new requirements for Principal Certifying Authorities for the collection of data about certification work and related matters.

  • Complying development in bushfire areas - NSW

    This information sheet has been prepared to assist HIA members to understand the regulations and guidelines regarding use of complying development in bushfire areas in NSW.

  • Condensation management NCC 2019 changes explained

    The National Construction Code (NCC) 2019 introduced new provisions to help minimize the impacts of condensation within houses and apartments.

  • Determining Bushfire Risk - WA (250KB)

    This information sheet provides an introduction to the considerations to be made when determining bushfire risk in WA