Depends on the local terrain, but they all have at least root cellar tunnels, if not the entire home dug into a hillside, or inside a halfling-made artificial hill. Constant is: there are always windows and halfling-sized (not larger) doors (big furniture: made in pieces that…
— Ed Greenwood (@TheEdVerse) February 17, 2018
2)…fit through doorways, and are assembled inside. However, halflings inhabit narrow, low-ceilinged homes like human homes when living in human cities (they subdivide human buildings between several halfling families, or an owning family and renters who are also halflings). …
— Ed Greenwood (@TheEdVerse) February 17, 2018
3) And in forests, they construct log homes by joining living trees with felled trunks of other trees, to make a "ringwall," then weave a living-branches-plus-dead-ones net for the roof, then cover it with a thatch of grasses, then cover that with earth, then plant it with …
— Ed Greenwood (@TheEdVerse) February 17, 2018
4)…herbs and flowers and greenleaf plants (all edible). In mountainous regions, they will use caves but fit them with weir-like (wattle) walls and traps and "runs" to make them too small for anything larger than a halfling, and these sharpened-stake constructions will be …
— Ed Greenwood (@TheEdVerse) February 17, 2018
5)…sturdy enough to stop (and kill, if persistent) a bear, owlbear, etc. So the answer is "it depends" on terrain, climate, etc. I did an adventure back in 1978 set on an island in the Nelanther wherein a town of halflings lived in the tunneled-through and joined-together …
— Ed Greenwood (@TheEdVerse) February 17, 2018
6)…hulks of many wrecked ships that had run aground on a notorious "Wreck Beach." The halflings gleaned gear, food, and goods from all the pirates and adventurers who came to plunder the wrecks, over the years. :}
— Ed Greenwood (@TheEdVerse) February 17, 2018