$12 Modern office building Low-poly 3D model by forstsat11. Available on CGTrader with 32576 polys and 43719 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 55.4 MB), OBJ (OBJ, filesize: 6.65 MB), FBX (Autodesk FBX, filesize: 2.38 MB), GLTF (glTF, filesize: 394 MB), ABC (Alembic, filesize: 12.3 MB), STL (Stereolithography, filesize: 3.44 MB), PLY (Ply, filesize: 3.07 MB), DAE (Collada, filesize: 16 MB)