Survival Shelters: a yurt of sticks and mud
If our family might begin to have real issues, say an early winter and being at higher latitudes and due to the weather. The weather will influence everything after a collapse: agriculture, livestock, disease, water, war, foraging, clothing, etc. If so, they might have to skip their goal, not matter how great a remote cabin might be, if you can't get there in a reasonable amount of time, then it won't help you. If so, a semi-permanent shelter can be made of wood and clay soil that is muddy enough to use as building materials. It's one of the most common shelters made of "survival cement" as mortar and branches.
[link to www.handprintpress.com
Such shelter have many names depending upon their styles and the cultures in which they evolved. Knowing the basic idea, one can build them above of below ground. Both have advantages.
Usually the ones below will end up warmer, but they are built on hillsides that have been partially excavated, and that is work. It also means that you disturb the soil, and could create an erosion issue accidentally, so you must also channel water flow, or else be clever and really look at the land and rainfall patterns. Even then, rare flash flooding may seasonally come, so you must look at drainage and nearby hillsides at higher elevation and if that will get diverted into your path.
Ones built above ground may require more materials for the roofing, so you'll need thatching to wick away rain. However, the sun is getting on your shelter too, and of course everyone appreciates it's warmth and a sunny window. It's not as well disguised usually, as people like to live in meadows, but realistically that means dragging building materials there and it becomes obvious that something is being constructed due to the disturbance in harvesting those materials. A lot of foraging comes from meadows, so it may mean less walking. It'll be drier inside, less mildew, maybe more flies though. Hotter in summers.