$8 Building bricks 3D model by 3d-vlad. Available on CGTrader with 35000 polys and 32000 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 10 MB), MAX (Autodesk 3ds Max, filesize: 20 MB), FBX (Autodesk FBX, filesize: 10 MB), 3DS (3D Studio, filesize: 10 MB)