Check out building low poly 8 modern office Low-poly 3D model on CGTrader for $8. High-quality mesh by cocart: 729 polys, 1000 vertices.
MA (Autodesk Maya, filesize: 1.18 MB), OBJ (OBJ, filesize: 1.18 MB), FBX (Autodesk FBX, filesize: 1.18 MB), MAX (Autodesk 3ds Max, filesize: 1.18 MB)