sorry but what is this for? game environment, art project, pre-rendered animation or something else? The environment looks like a game level but the way your building it sounds reaaaaaally inefficient for that. I would seriously consider taking AmbiguousPackage's advice and look into modular level design. If you look at…
If you do go down the modularity route, the Assassin's Creed games boast many outstanding examples of modular world building with these types of buildings. Besides that, I'd say pick a different texture for your ground plane (or at least darken the one you currently have). Right now it's pretty close to the texture you're…
Nifty, I'm working on something similar to this. You could stand to break up the different building stories and warp the corners of the buildings a bit more. Nice start though. I'd recommend making a bunch of tiling textures, then vertblending them all on modular pieces. It works really nicely.
Are the buildings just models or BSP. If you have worked with modular building design, you may want to look at using proc building creation in UDK. Not only will it save you lots of time once its setup but you will get many building design quickly generated for you. http://udn.epicgames.com/Three/ProceduralBuildings.html
Thanks you guys for the feedback so far! :) To answer some of your questions: - buildings are textured with vertex painting with 4 tileable textures (my material looks like "spaghetti-vision", but it works :p ) - it's an environment project, where we need to make an environment to work in a game engine, so I have to…