unfortunately not that simple.
The way it works now, is the panel is assigned to a cloud account.
The new owner of the house cant setup the app as they need access to that cloud account.
If you remove the panel from the cloud account, the new owner will then have to create a cloud account and then set it up or get an installer to do so.
If the panel is still assigned to a cloud account, the new owner may struggle to get it released.