If you opened or remodeled a Connecticut restaurant recently, you have probably heard that the kitchen ventilation rules changed. The message usually arrives vaguely, from an inspector, a landlord, or a contractor who is tired of redoing work. The practical question is narrower: which approval controls your hood, your exhaust fan, and your duct route, and when does zoning get involved? This guide walks through how Connecticut zoning, the state building code, and the permit st