The Passive House concept was first developed by German physicist Dr. Wolfgang Feist during the early 1990s in Darmstadt, Germany. The goal was to create buildings that use very little energy for heating and cooling, while still providing a high level of comfort for the occupants.

The exact definition of Passive House, as provided by the Passivhaus Institut is as follows:

“A Passive House is a building, for which thermal comfort (ISO 7730) can be achieved solely by post-heating or post-cooling of the fresh air mass, which is required to achieve sufficient indoor air quality conditions – without the need for additional recirculation of air”

Dr. Wolfgang Feist (via Passive House Institut)

With the new NatHERs minimum set to change to a 7-star energy rating, you may be wondering how to go about building a new house that meets the target. 

With buildings in Australia accounting for nearly 25% of carbon emissions it is not surprising that buyers are looking to build more sustainable homes.

The BASIX assessment and NatHERS process is an ever evolving practice which requires extensive knowledge of available materials, passive heating and cooling strategies and how to design in an ecologically sustainable manner. Although to complete and sign off on the BASIX process one must be a certified assessor. The assessor’s background does not play a large role in determining their competency in assessing a building’s efficiency. Therefore, the question is raised as to who is the most qualified or most knowledgeable to be completing the BASIX assessment?

You really need to check with the council. 
While not particularly a ‘relocatable home’ as it sounds like an existing residence, not a new prefab one, this is the only information on the BASIX website:

NatHERS, (or Nationalwide House Energy Rating Scheme), provides a rating system to determine the thermal comfort of Australian homes through software simulations. This system rates from zero to ten stars. The more stars a home gets the more comfortable the occupants will feel when living in the house/unit without additional cooling or heating systems. A building is unlikely to need any artificial heating or cooling system if it gets a 10 star rating.

A large proportion of Australian architects have followed suit with their English counterparts developing Declare Australia in an attempt to promote a self-sustaining and constantly regenerating environment for future generations. But, what impacts will this have for property developers and builders going forward?

Getting a BESS statement can be a drawn out and frustrating experience with councils. To get a BESS statement requires a variety of factors such as management, water, energy, stormwater, Indoor Environment Quality (IEQ), transport, waste, urban ecology and innovation. With IEQ being weighted at 16.5% towards BESS certification, here are four ways where you can improve the Indoor Environment Quality of your next commercial or residential project, while being one step closer toward BESS certification:

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It is important that designers modify their designs in relation to the climate in which they are built in. In order for the occupants of a home to remain thermally comfortable, the design must work with the climate, not against it, decreasing the need to use heating and cooling systems.