Here is a photo from the ABC Brisbane facebook page
I would say this is far to close.
That space is just going to be a collecting point for spiders and vermin.
I really don’t see the point of wanting a detached house and then having it look like a terraced house.
It is really going to hit the resale value as well.
A good rule of thumb if you want to avoid something like the above photo is plan for a house 2m narrower than the block.
That means you can have a 1m path on either side