Essin
I'm not sure what you mean by "re-scanning", so I might be stating the obvious, but the vast majority of buildings and roads on OSM are drawn by hand from aerial images or GPS traces, by volunteers as a hobby. Sometimes, it is done systematically over a larger area, but usually only a few buildings are drawn at a time, preferrably by somebody who knows the area and can interpret the sometimes unclear aerial images. Maybe that person could be you? You can edit the map directly on the website if you create an account.