Ours went up a couple grand, not much.
If you're doing extensive renovations to your home, I suggest you get a loud dog prior to the next valuation. The guy knocked on my door, my dogs went nuts like they always do, and his valuation was based on asking me "Has anything changed?" and my replying "Nope." My dogs wouldn't hurt a fly, but their barking is indicative of bloodshed and wrath. He wouldn't step foot in my house. I suppose that's ok by me.