I grew up in Hicksville and worked for a guy for 3 years before making the best decision of my life and moving off LI.
Don't get me wrong, I still love parts of the Island, but Nassau County is quickly not becomming one.
Sorry, but I have no details. The guy I used to work for had a wall full of licenses. He said it cost him a few thousand dollars a year to keep them all. This was 15 years ago.
I'm sure the town hall or building inspector's office would have this information, no?
"Anyone who has never made a mistake has never tried anything new." -Albert Einstein