Layers, like a chocolate parfat...
Well, lessee, then.
The first layer should be the surface communities. We'll toss out Hill Dwarves, and reverse-engineer the mountain.
Long ago, the Dwarves were from a mountain kingdom a way off. It was routed, they were driven out, and so on. Several of these wandering Dwarven bands eventually came to settle here, in Human-controlled lands, and made a few mixed villlages, a few mostly-Dwarven ones, but always intended on making a real Dwarven home.
So, first, we have three, maybe four small communities of HIll Dwarves, who farm, run Guilds, and live in houses above ground. For fun flavor, they do stories down, not up, for that homey feel. The first floor is the den, for example, while the staris down go to the living areas, heating hearth, and so on. Similar, yet different. The Hill Dwarves have guilds, like the humans, with bakers, millers, farmers, and so on. Very good craftsmen, very social ... think of happy German octoberfest things.
The next layer is the Hill Fort. A walled fort, semi-community, where the Hill Dwarves can retreat to in case of surface attack. Built into the walls of the mountain (Large hill?) with a wall surrounding it, this was wheer the hillfolk first started working together to try and rebuild a TRUE Dwarven community. This serves as a gateway between the surface world and the lower one, so that it remains martial, yet peaceful.
The third layer would be the Dwarven city. Well. More a still-growing town, but hey.

Again, we'll keep the 'Dwarves go down' construction method, with all buildings being pretty much one story above ground, with 'taller' buildings going deeper. Only something in need of a display, like the King's Hall, should be larger or fancy beyond need. The buildings closer to the entrance to the cavern should be older, more closely packed, and less ornate ... they were miner houses, who first started digging, and the town grew past them. The streets should be orderly, somewhat more narrow than human streets (Carts, not wagons, are the biggest thing used), and well kept. Natural features, such as streams, or a pretty, but useless, vein or ore are worked into the pattern, rather than be 'paved' over in the name of progress.
This layer is bustling, with many homes and stores, homes more to teh edges, stores mainly to the central road. Indeed, several pull double duty, with a store on the surface layer, the family living beneath. Being invited downstairs is a very big invitation, and an honor. Refusing such is a grave insult to a Hearth.
The last level owuld be the 'New construction' section. Miners, tunnelers, and a LOT of soldiers down here. Dwarves expect raids in the tunnels, first and foremost, so defend here the strongest.
How's that for fast brainstorming on the 'Different kind of Dwarf' compound? You get to keep the traditional 'Our home was destroyed' bit, but, you get a fresh new vibrant feel.
-- Cap!