I looked at it myself a while ago.
They are few websites were people will post what they want and what they have.
You can read some testimony.
Also if you are willing to go with agency, I did approach one, and he asked few of the houses that he had for sale if they could consider a swap, and I did visit few who agreed. But the houses did not suit me.
Since my hours at work were cut a lot.
So not in the position to do it for now.
pm me if you want more info.
But I don’t know anyone who did it.
Fabienne