Point cloud to low poly by redrawing

Hi everyone,
Im looking for a technique, software i could use for draw simple 3D model on a point cloud.
For example, an house: i would like to import my point cloud draw the walls by clicking the corner on the point cloud, do it for the 4 walls and the roof and then export as a 3D model.

Any idea, help, would be greatly appreciated.

Thankss