What do we know of their dwellings? I've almost forgotten about it since waiting for a new book! But now we can make some articles, can't we? It's good for inspiration and overall impression - I like, when GW explains how the society works and operates. So here we go.
Of the Dispossessed we now know little and have no pictures of their cities. But we do know that they lived and live in mountain holds, mostly under them, for example, those who fled to Azyr have carved enormous cavern kingdoms under Azyrheim. Their domains and fortresses are all hard lines and unyielding angles, as rigid and unforgiving as the warriors who have created them. From the societal point of view it seems they live in typical feudal societies you'd expect from fantasy in general, with clans, kings and the like.
The Fyreslayers live in great forge-temples, residing mostly in mountains or under them. As they all need power to power (pun intended) their forges, they are very creative about it - from lava to great solar lenses (as does one lodge in Hysh). Slayers are organized around one runefather who is the patriarch of the lodge (think military or mason lodges). And we do have one picture of their forge-temples, here it is:
and one lodge in Aqshy also:
As far as the Kharadrons are concerned, they live in air cities high in the atmosphere. Their society is meritocracy at work - the most successful and luckiest gets the most, so everything is organized around profit and Admiral Court who oversee the whole life and comprised of the best and wealthiest pirates at the time. And this time GW was so generous they provided us with lots of pictures about their cities and life in general, here they are: