There are several avenues for improvements in detail extraction from complex facades, and improvements of our understanding of how well this works. First of course are data experiments in the form of a study with many buildings, thus applying the work flows to many images and many buildings, as well as to a variety of look angles in vertical aerial photographs. Second, is the refinement of the 3D point cloud segmentation by well-thought-out methods of finding planes in point clouds. Third, is the ability of automatically recognizing occlusions and then responding to occluded facades by taking advantage of the overlapping images and their multitude of look angles. Innovations in window recognition will then become relevant, as will be site-dependent approaches to architectural styles.