I've added one I could see on Esri imagery. If there are more someone on the ground could perhaps supply photos. 

Since you can easily add photos in StreetComplete, it's usually a good idea to include at least one to let others get an idea what actually is there on the ground. Since aerial imagery is often months or years old, new construction often won't show up when it's done. But to that end, »new buildings« is too little detail to add anything to the map.