Homeowners may do their own electrical, plumbing, and mechanical work. If they do not have a Licensed Master Electrician/Plumber/Mechanic reviewing and taking responsibility for their work, they will need to submit applicable wiring, plumbing, or HVAC diagrams and details for review.
If the inspection of the homeowner's work should fail twice, the work will be required to have a Licensed Master Electrician/Plumber/Mechanic correct and complete the work.