Hah, looking back oh how naive I was. Of course after the MultCo appraiser came around my taxes went up a huge amount. I learned that only when I got my property tax statement in November 2017.
Anytime you pull a permit taxes go up. This first year it is up by $275 per month but that is higher since it accounts for back payment (from November all the way back to January 2017). Once we get to January 2019 my net increase from my construciton project will be about $150 per month... forever more.
Something to think about for those on here who might be crunching numbers and deciding what's what and what's worth it. Still worth it for me...