More than likely, it does; permits cost, time to obtain, and requirements can vary from state to state and county to county. It’s always good to check local building codes to see what is required. Whenever I reroof a house, the city building inspector asks that I send pictures of the roof decking to ensure that roofers don’t place shingles over rotten boards and photos of the ice and water barrier installed 2 feet past the interior wall as per code Minnesota.