I stumbled across the Banksia design on the YourHome website too.
It's 95% of what we were after.
It's a simple plan, makes functional use of floor space, and has a layout that suits our block perfectly.
We have a level site in Thornleigh 2120 but are struggling to find a builder who will even bother to quote on the build.
Keen to hear from anyone who has proceeded with any of the YourHome designs.
The Harmony House blog covers the first YourHome build in Australia.
https://harmonyhouse.com.au/index.html