Well, it looks like the buildings have a bit of a mud texture at the moment. I am sure there are better textures out there, that work well with the realistic landscape (which looks good by the way, I like how you give the impression of height to the terrain).

I can't really help you with textures though as I am a Profantasy software user and that software comes equipped with houses in all kinds of different styles. Maybe another guild member can point you to some good textures.