Scunner you keep saying this and they may well be but they do come in differant thicknesses and supposedly differant thermal qualities.
When doing your research
on the internet you will find different types with different thicknesses and that could mean different levels of insulation.
In Fethiye you will find pretty much one type, made in Denizli as far as I know. And that one type is crap. That one type is the type the developer you are considering uses (just like pretty much everyone else) and shown in the photo I posted of the property on housing development you are considering.
There does not appear to be too much choice when building in Turkey.
Correct. Locally, there is the one type of terracotta pot, and there are other options available, like white Thermalite and Thermalite type blocks.