Going off of this, if you want to create new housing in Therenborough there's mention of some areas on the model in the housing office that aren't developed:

>A miniature keep in pristine condition dominates the scaled city. The trained eye can easily pick out the theater, college, amphitheatre, and the civic building near the Frontier Gate. Red paint boldly illustrates Mason's Circle, the Lower East Way, Imperial Square, Chanter's Retreat, and the Upper East Way, the city's major residential districts.

Oh and as Human champion I beg you to keep Rossman's Human! :P


~Thilan