Registering your hives is not only a good idea, its the law. Many people ask what is the benefit to me? For one thing, it establishes that your hives have been in a certain location for a documented period. If zoning laws are passed, you may be able to claim that your apiary is grand fathered. Also, if disease or a new infestation breaks out, you can be notified to treat your hives to prevent infection and to help further prevent further spreading of of the pathogens.
For more information, please go to Office of State Entomologist website at https://portal.ct.gov/CAES/Inspection/Inspection/Inspections-and-Registrations#Beekeeper