It was built in the early to mid 1800s, how much renovation could it need? Sheesh. Slap some makeup on it, bit of the ole duct tape and she's good as new. I can only imagine how much of a pain it has to be to have gone back and ran electricity, network cables, heating/cooling and stuff in buildings made to last that long that didn't have designs for them. I'd almost say to just make it all smaller inside by framing and putting up sheet rock inside, and then running everything between the external walls and the sheet rock would be easier.