Dwarves live in or near mountains.
Brownies live in the branches of trees away from the predators that hunt noght and day on the ground below. Not uncommon for them to be near where gnomes or elves live, as these races compliment each other.
Gnomes tend to live within the roots of great oaks or in a hollow tree. Usually very close to the oak of a druid. Rangers vale comes to mind, but there is only two residences there. Harmony Grove would be another, but I have only ever seen one, and its a house.(must be blind if there is more)
Much of the residences offered, are human specific residences.
Elves living as long as they do, sculpt the plant life so that they may build their communities within the trees great branches. High Elves tend to build much like the greeks and romans, grey elves in the mountain peaks, sylvan in the trees, and grugach(do not know where they like to live, as they tend to be more xenophobic than the grey)