There's nothing wrong with certifying organizations, but there ought to be competition and free market choice. Leave it to the buyer to determine if they wish to hire a "State Certified Electrician" or "Professional Electricians" certified electrician, or the electrician with not credentials. But also place legal civil obligations on the buyer. "OH NO!" you scream because how can the buyer know what the local codes are and make sure the electrician is following them? The buyer needs to know and be educated to transfer that risk to the electrician. State in the contract that the electrician is responsible for any/all civil fines due to work they perform. The certifying (and competing) organizations can/will work with insurance companies to also transfer some risk off and away from the contractor.

The contractor and buyer still should be criminally liable for any willful noncompliance.