This may seem a bit silly coming from me, but I have region where when I was first appointed I could build all the different workshops (it's a city). A bit rashly I built a tournament grounds, an academy, and a granary.
Well my region had a population of 10 and as you can imagine they all fell apart. Now however, when I try to build I am only given the option of building a cart builder. (I rebuilt the granary after it fell apart, it's now at 25% damage though it doesn't seem to be increasing much anymore now that pop is up to >2000).
Any ideas why I can't build more things, should I just wait for more peasants to come to the city?