Department of Justice
Designing and constructing a new home or extension to be energy efficient will cost much less than attempting to refit an existing building.
Homes incorporating sound environmental design principles can minimise heating and cooling bills and have a lasting positive impact on the environment by reducing greenhouses gases. Some of these principles include:
The energy efficiency requirements depend on the climate zone in which a house is located. Climate zones are determined on climatic data and there are two Tasmanian zones:
Good solar orientation of a house has the potential to achieve substantial energy savings when combined with an efficient design. Houses built with a north facing orientation for the main living areas are more likely to easily achieve the required Star rating.
Houses with large areas of glazing facing south, west or east may still achieve compliance but are then likely to incur higher construction costs and on-going heating costs for the occupants.
The design and construction of the house's envelope - roof, external walls and floors, will have an effect on the thermal comfort of a house. To achieve the required Star rating the design and construction will need:
Enhanced Commercial Building energy requirements (in Volume One of the National Construction Code) applied from 1 May 2013.