I made an example in QGIS where I use Geometry Generator to clip
the buildings layer to a circle that is created 500 meter around the center of the map. If you pan the map in QGIS, another part of the map is clipped on-the-fly. This way it’s super easy to change the area wherefore you want to create a building footprint poster.
The example I created including a QML-file, sample data and a sample project file can be found and downloaded on my GitLab-page.