https://joshshouse.com.au/about-the-project/
This is is somewhere in WA i think. Use only low e glass except the one in kitchen. 10 stars nathers rating. Started with orientation

Windows here in Oz are off the scale cost wise compared to uk , although you are not comparing apples with apples as 90% of windows in uk are Upvc…

It would be great if everybody could have double glazing, but everything comes at a cost, & the cost of double glazing is certainly significant.
I'm not expert, but in Perth's…

Alpine environment, I'd be DG'ing all the way. It absolutely makes sense.
In Perth. Good design, PV panels and RC AC are going to give you best ROI which I think…

E Glass meets the energy code requirements in Perth which has a moderate climate ( goldilocks zone) while most spend more time outdoors than indoors.
If you have a spare…

The most important aspect of a house design is orientation. If you don’t have that right, then everything else is just fighting to get your house back where is should…

Hi and welcome to the forum. Nice to have another WA contributor.
I've built 3 times, the last 2 was OB. I looked at DG but like you struggled to justify…