TonyC, I think that would require the vendor to agree to any change in the terms of contract for sale which they may not agree, but thats another topic.
In my case I’m the other way around as it appears that at least 3 owners in my block have removed sections of internal walls.
There is nothing on the records that i can find and no by law for the works. I was unaware of when we purchased our unit as nothing was noted on the strata report.
I only have online photos and floor plans to rely on and some photos I took myself from a more recent reno.