5 star rated houses in Victoria, Australia

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==Examples of 5 star houses== ==Examples of 5 star houses==
-===Surrey Hills - house 1===+===Surrey Hills - 2 houses on a main road===
-This house is newly built on a cleared block. It is on a main road. The price of the land would have exceeded $400,000. +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.
<Gallery> <Gallery>
-Image:5 star house Surrey Hills 1 DSC 8415.jpg|Front of house+Image:5 star house Surrey Hills 1 DSC 8415.jpg|House 1 front
-Image:5 star house Surrey Hills 1 DSC 8421.jpg|Rear of house+Image:5 star house Surrey Hills 1 DSC 8421.jpg|House 1 rear
 +Image:5 star house Surrey Hills 2 DSC 8417.jpg|House 2 front
 +Image:5 star house Surrey Hills 2 DSC 8419.jpg|House 2 rear.
</Gallery> </Gallery>
-The front of the house is unremarkable.+The front of the house 1 is unremarkable.
-At the rear of the house: +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 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. * A swimming pool is installed - which is a waste of water and chemicals.
Line 35: Line 37:
* The rear windows are not double glazed * The rear windows are not double glazed
-===Surrey Hills - house 2===+The front of house 2 is reveals a large evaporative cooler on the roof, no eaves around the house, and extensive external brickwork.
-This house is newly built on a cleared block. It is on a main road, situated next to House 1. The price of the land would have exceeded $400,000. +
- +
-<Gallery>+
-Image:5 star house Surrey Hills 2 DSC 8417.jpg|Front of house+
-Image:5 star house Surrey Hills 2 DSC 8419.jpg|Rear of house+
-</Gallery>+
- +
-The front of the house is reveals a large evaporative cooler on the roof, no eaves around the house, and extensive external brickwork.+
- +
-The rear of the house shares identical issues to those of House 1.+
==See also== ==See also==

Revision as of 11:45, 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.

See also

References

  1. 5 Star House, Victoria, Australia


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