Wholesaling a home that a tree fell through!!!!

[Jarred Pyle]

I am new investor and have only done 2 wholesale deals in the Houston market years ago. I moved my roofing business to Nashville at the beginning of 2022, and am now starting to have wholesale opportunities come up from past roofing clients. I recently had a past roofing client contact me from a tree falling through his house at the beginning of March, and expressed that he would willing to walk away from the property for $300K plus his insurance money he received. At the moment I am stuck because there are very few CMA's supporting a older completely remodeled homes, and even less new construction. On top of this the area is remote. I see this going one of two ways for the cash buyer.....

1) Purchase the home that sits on 1 acre, and needs about $200k worth of work inside and out to bring the home back to usable condition, and also completely updated inside and out. 

or

2) Tear down the home and do a new construction spec build (which I cannot find any sold data on in the past year)

So, my question for the bigger pocket forum is how do I come up with an accurate ARV or even a new construction value if there are very little comps? If anyone could lend 20 minutes of their time to help out that would be greatly appreciated.