Ha, I commented on your septic thread. It seems like your property is a few years behind ours in a bunch of ways. In 2016 or 2017 (I'm blanking on which right now), we got a notice of non-renewal on the roof on our duplex in the same neighborhood. They basically told us if we didn't replace the roof they wouldn't renew. If we had found a roofer willing to certify it with more than 5 years of roof life, we could have gone on to Citizens (at a higher price), but only for the time greater than the 5 years of roof life.
It had a couple of leaks repaired at different times, and we had already done the roof certification once before, so we ate it and ended up putting on a new asphalt roof.
What broker/insurance co do you use? We haven't seen any significant increase in our policies on our asphalt roofs since Irma - the one that's in your neighborhood is the one that we replaced a few years ago so is fairly new. But our primary residence is <15 miles south and is probably pushing 20 years old (it wasn't new when we bought in 2009).