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Commercial Plumbing Codes
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Been doing residential plumbing for a while now, and I'm thinking about branching out into commercial work. Heard from a buddy that you need some kind of special cert or license to do plumbing for businesses and bigger buildings. Is that true? If so, what's the best route to get it—classes, online courses, or just studying on my own and taking some exam? Any tips appreciated, kinda lost here lol.
