Deciding whether to save very old family house
My wife and I have to make a decision soon on whether to save the nearly 200-year old house where she grew up in northern Vermont. We've done some remodeling/updating over the years, and the house itself is fundamentally solid. It's classic post and beam with ugly siding on the outside. Wiring is partially updated, plumbing needs a lot of work, weatherization needs to be completed. It's obviously going to cost a lot of money to make the house liveable.
The big issue is the dirt-floored basement and the foundation. The house is on a slope with the original stone foundation, and a stream runs through there at some seasons, esp. during the spring melt.
My main question is this: what kind of a professional should we consult on this? Any input or suggestions very welcome. I'm new to these boards and this is my first posting.