Building schematic?

hello i have a question since im quite new to unreal engine and i cant seem to find the answer anywhere. So i built a huge structure out of the geometry blocks and i want to save the building, and put it in another project. how can i save the building like a schematic? like i just highlight the whole building and say save schematic and then i take that file into another program and paste it there? is that possible?! please help DX