5 star rated houses in Victoria, Australia

From Greenlivingpedia, a wiki on green living, building and energy

(Difference between revisions)
Jump to: navigation, search
Revision as of 12:09, 21 November 2008 (edit)
Peter Campbell (Talk | contribs)
(Houses built at or near the Waverley Park site - Add Cranbourne houses)
← Previous diff
Revision as of 12:18, 21 November 2008 (edit) (undo)
Peter Campbell (Talk | contribs)
(Cranbourne Estate houses - Down heading level)
Next diff →
Line 69: Line 69:
* Many houses have evaporative cooling units * Many houses have evaporative cooling units
-==Cranbourne Estate houses==+===Cranbourne Estate 5 star houses===
<Gallery> <Gallery>
Image:5 star houses Cranbourne DSC 0958.jpg|Cranbourne estate houses - note evaporative coolers Image:5 star houses Cranbourne DSC 0958.jpg|Cranbourne estate houses - note evaporative coolers

Revision as of 12:18, 21 November 2008

In Victoria all new homes built since July 2004 have been required to achieve a 5 star rating.

This means it is compulsory for new houses to have:

  • Star energy rating for the building fabric, and
  • A rainwater tank for toilet flushing or a solar hot water system, and
  • Water efficient shower heads and tap wear.

The average energy efficiency rating of houses in Victoria was only 2.2 stars before the introduction of 5 star standard. From 1 May 2008, the 5 Star standard will be extended to cover alterations to homes and relocations of existing homes.[1]

Contents

Why five stars is not enough

The five star rating system in place in Victoria is well below current standards in Europe. For example, it has the following shortcomings:

  • the efficiency of appliances (heating, cooling and electrical) are not assessed
  • the use of energy intensive appliances that can be avoided by good building design - such as evaporative coolers and air conditioners - is not assessed.
  • the use of thermal mass is not optimised - for example large unshaded brick walls facing north are allowed.
  • double glazing is not required - single glazing has a higher heat loss through windows.

A move to 7 star standards is required to reduce carbon emissions and energy use for residential housing. The final goal of reaching zero emissions housing needs to be set.

Examples of 5 star houses

Surrey Hills - 2 houses on a main road

These two houses house is newly built on a cleared block. They are on a main road. The price of the land for both would have exceeded $400,000.

The front of the house 1 is unremarkable.

At the rear of both houses:

  • A single solar hotwater panel on the north facing roof, but no solar photovoltaic panels. A lot of solar potential is wasted here.
  • A swimming pool is installed - which is a waste of water and chemicals.
  • There are no eaves or other shading over the north facing rear windows - which will transmit excessive heat into the house over summer months.
  • Brick thermal mass is also exposed to north facing sunlight - rather than being insulated byh a facade or shaded. This will also store and transmit excessive heat into the house over summer months.
  • The rear windows are not double glazed

The front of house 2 is reveals a large evaporative cooler on the roof, no eaves around the house, and extensive external brickwork.

These two houses house is newly built on a cleared block. They are on a main road. The price of the land for both would have exceeded $400,000.

3 north facing houses in Surrey Hills

The front of these three houses are all north facing, and have the following shortcomings:

  • Little or no eaves or shading over masonry north walls or windows - both will transmit excessive heat into the house over summer months.
  • No solar photovoltaic panels. A lot of solar potential is wasted here.
  • No double glazing

Houses built at or near the Waverley Park site

These houses have the following shortcomings:

  • Small eaves over external masonry north walls or windows - both will transmit excessive heat into the house over summer months.
  • No solar photovoltaic panels. A lot of solar potential is wasted here.
  • No double glazing
  • Many houses have evaporative cooling units

Cranbourne Estate 5 star houses

These houses have similar shortcomings to those listed for the Waverley Park site houses.

See also

References

  1. 5 Star House, Victoria, Australia


You can help Greenlivingpedia by adding more content to this stub article. Click on the edit tab above the article title to start editing and adding content.


Personal tools