Everything's a thing here in construction ! Wood frame housing is certainly a thing here, especially now that "eco" is a hype word. But it depends on what you think of. I'm under the impression some states in the US people build houses that aren't really sturdy enough to withstand catastrophic events happening (tornadoes, car crash, fire, etc.) while the typical Belgian and Dutchman builds houses that last a lifetime with bricks, concrete and solid foundation. So the type of wood frame houses I see here are still laid up with all those things, but with the wooden frame meant as a structure to build around, not so much as the main support structure. In the end you can't really tell if it has a wood frame, steel frame or concrete frame.@Phuncz out of curiosity, what construction methods have you looked at? Is wood frame housing even a thing there?
This is an example of a random Belgian wood frame house (semi-detached) I found:
Another one:
Belgium is geared towards owning a house that's been paid off when you retire, so it should last long enough that you can actually survive on your pension.