A construction project is a marathon, not a sprint. Therefore, it is not unusual for a project to be completed in stages, since at the same time certain decisions have often not even been made. Financially as well as structurally, it can make sense to divide up construction areas over time.
A good example of this is this project on Türgasse in Wädenswil. At the moment we have completed the 3D modeling for the two attached buildings Türgasse 24+26, already two years ago we were allowed to survey and 3D model Türgasse 20 & 22.
A construction project is a marathon, not a sprint. Therefore, it is not unusual for a project to be completed in stages, since at the same time certain decisions have often not even been made. Financially as well as structurally, it can make sense to divide up construction areas over time.