Procedural Apartment Low-poly 3D model
Highly customizable procedural building. You can customize windows, entrances, building floor number, building size, air conditioners, vents, pipes, etc. If you don't want procedural version there is modular fbx version in my store page.Make sure to check it out.
PS:To make it hda file to get the materials correctly you should either migrate Unreal project to your own project or simply create the same naming and folder structure in your Unreal project as the example provided in Reference Setup.