The following are from my previous part-time and current freelance work. These projects are made for architectural visualization projects. Some are block-out models only and some were final post renders. I do the modeling based on a CAD drawing and imported the "CLEAN" up elevations into 3DS Max where I trace the lines into geometries.
Some projects did not have any elevations at all, some were eyeballed using only Google Streetviews and Google Earth references. Those projects required careful consistency of scale once one of the building is made. It is challenging but very rewarding once it is all approved.