That might depend on the needs of the department. Just like anyplace, the pay is (should) be based on what you can bring to the table. Some places have inspector grades, typically based on the disciplines you can inspect. There are basically 5 major disciplines: building, plumbing, mechanical, electrical and fire, each of them at different levels depending on whether it is commercial or residential. Inspector 1 might be 1 of those disciplines, inspector 2 might be 2 of them, and so on. But, if the need is greater or a premium is placed on a particular trade, I am sure a department may lean a little higher. In my state, electrical inspectors must be a currently licensed electrician, which narrows the supply and increases the demand. Some jurisdictions do the same for plumbers, so it just depends on where you are. Reach out to the CBO where you are. He should want to help you out with guidance, some will even allow ride-alongs.
NY may have different requirements since they have there own state code. But my guess is they are similar, and that attitude, desire and initiative would play a big part. And remember, I advised starting with residential certs, but the number of and type of certs is almost endless. Even if you get 'em all, they will just invent more. This forum is a good place to start too. When I decided to come out here it was somebody on this forum that offered me guidance.