Back on topic...
mguar, what I am trying to say is that there are multiple ways to compare "apples to apples", and NONE of them actually accomplishes that goal.
You are trying to compare the physical characteristics. Similar construction, size, amenities, etc.
I am comparing the culturally determined economic class. Middle class in one location vs. middle class in another, etc.
The reason we won't find equal comparisons on the physical characteristics is because they are not equal. A "typical middle class" house in the US classifies as a very wealthy house in most parts of the world.
Your timber framed house would be nearly impossible to build in a place like the Dominican Republic- deforestation has left them no trees. It could be built, but all of the timbers would have to be imported at a truly astronomical cost.
The shingle roof you probably have would be considered an inferior product in parts of the Caribbean, etc.
The only way to make a legit comparison is by economic class. We don't do it because most of us don't like to accept the fact that by world standards, we are rich.
When I lived in the DR, my family's gross income was $500 per month. I thought it was peanuts before I got there. I eventually learned that we were one of the wealthiest families in the village, and the home we lived in (which I thought was pretty modest) was one of the wealthier homes in the community.
The apples to apples comparison economically would have put us in a middle class home in the local economy for significantly less than the cost of a middle class home in the US.
Same happens in a lot of countries. Why do you think so many US citizens retire to places like Costa Rica? When I was there (over twenty years ago), I could have bought a decent middle class home in a middle class neighborhood for under $20K. Prices are higher, but there are still a lot of bargains.
Any home that is getting international marketing is NOT a middle class home.