My old man’s place in Devon was like that. The walls were thick at the base and got thinner as they went up with a thatch just resting on timbers, themselves just resting on the top of the wall, tied in with wooden pegs. It was all mud and straw apart from the bottom few feet. It was surprisingly hard. I can remember putting an extractor in and needed a hammer drill to get through the outer inch or two, inside was less packed but had some small stones in as a rudimentary concrete.Wow. That looks just like my sitting room in Warcop. My place was originally a cumbrian farmhouse. Just like that with what would have been a range cooker. Also just like that a window off to the right. When we did the windows we removed an oak lintel which I still have. The house was built in the very early part of 17th century, so we think that the lump of oak would now be about 900 years old.
Farm houses of that era just had a single big room, I remember the layout well from my childhood. Sleeping was up on an open mezzanine. In our case that mezzanine formed the dining room ceiling, which when we did a bit of work was still daub over dried brushes.
All the houses are about the same size or multiples thereof as over the years, 2 or 3 will have been knocked together. Apparently this is a function of landowners allowing the peasants to build houses with a footprint “the size a family can build in stone to the height of 2’ between sunrise and sunset on St Swithen’s Day”*. The whole community would pitch in in a loose interpretation of family, most were probably related anyway, and build in stone which is fairly rare thereabouts to the minimum required and then crack on with the much more readily available mud, straw and cow shit.
Terraces were popular as you’d only need to build 3 walls, the 4th being in place already.
* These are criteria I made up as I don’t know the real criteria but you get the idea.