Sorry, can’t remember. Also, I’m in Marion county so the rules may be different in Sumter or Lake counties. Call Jamie, he or his staff can tell you.

We live in Sumter and when the inspector came he said the lanai will not increase our taxes. Something about stepping down onto the lanai.
We also have air on the lanai. My neighbors had their lanai enclosed and their taxes remained the same.:a040:

vinyl lifespan
 

Also be aware the vinyl tec type windows have an average life expectancy of ten years and will need to be replaced. Before someone jumps on and says not true mine are twelve years old, remember I said average. It will depend on the direction they face. Southern facing windows will get beat up faster and not last as long as Northern facing windows. Just something to consider when making your decision. We replaced ours with glass but would have chosen glass first had we known.