[BogeyBoy]

I enclosed the lanai with double pane glass - no heat or ac. At the same time I built a large bird cage. The Sumter County property appraiser came to look at the job and specifically told me there would be no change in taxes based on the glass enclosed lanai BUT there would be for the bird cage. Only change to our tax records after his visit -"Vill-Screened Cage (SEN4)". He had to walk right thought the glass enclosed lanai to get to the bird cage and had the building permits for both.

We have had no issues with "heat and humidity" other than it gets hot in the middle of summer and cold in the winter. We either don't use it or hook up our portable heater/ac during those times. The room is on the shady side of the house which helps.

One last thing - the contractor has to word the permit properly to classify the room so it is not considered an addition. I can look through my old records and review the permit for the wording if you'd like - PM me.