Then they do not get a final inspection. Here they would need to meet with the electric board to have the original electrician removed and allow someone else to take over the job. This person would need to be willing to accept liability for all work done by the original electrician as they now become the electrician of record for this project. At the meeting, the original electrician would be asked why they are refusing to finish the job/request final inspection, at which time the story of the homeowner installed wiring (illegal in this jurisdiction) would come out. This would not bode well for the homeowner.