Building Information Library

Free Access to National Construction Code (NCC)

The National Construction Code (NCC) provides the minimum necessary requirements for safety, health, amenity and sustainability in the design and construction of new buildings (and new building work in existing buildings) throughout Australia.

 The NCC comprises the Building Code of Australia (BCA), Volume One and Two; and the Plumbing Code of Australia (PCA), as Volume Three. 

  • Volume One: pertains primarily to Class 2 to 9 buildings which are commercial, industrial and multi-residential buildings.
  • Volume Two: pertains primarily to Class 1 and 10 buildings which are houses, sheds and carports.
  • Volume Three: pertains primarily to plumbing and drainage associated with all classes of buildings.

 Visit the Australian Building Codes Board (ABCB) website

Smoke Alarm

The Building Regulations 2012 (the Regulations) require the owner of a dwelling to have compliant smoke alarms installed prior to the transfer of ownership; where a dwelling is rented under a residential tenancy agreement or made available for such rental; and where a dwelling is made available for hire.

Please visit the Department of Mines, Industry Regulation and Safety website for more information on Smoke Alarm laws and Smoke Alarm laws publication

For more information contact the Shire of Carnarvon on (08) 9941 0000 or email

Estimating the value of building work

Schedule 2 of the Building Regulations 2012 (the Regulations), sets out the prescribed fee for a certified and an uncertified application for a building permit. The fee for a building permit application is based on a percentage of the estimated value of building work.  Schedule 1 of the Regulations sets out the relevant components to be included in that value.

It is the responsibility of the applicant for a building permit (including a person acting as agent for the owner) to provide the estimated value of building work for which a building permit is required. That value is an important indicator for property values and prospective purchasers, insurance and economic and statistical data.

The permit authority has a role in ascertaining whether the estimated value given is reasonably accurate as this assists in determining prescribed fees and levies that must accompany the application.

 See the document "Estimating the value of building work" on the Department of Mines, Industry Regulation and Safety for all the information.