Hermine Damage on Prospective Home

Wife and I have been very interested in a vacant property that needs complete updating but is in a great neighborhood with a the size lot we've been looking for. Ideally we'd want to add an addition or carriage house for an additional guest bedroom, and I've spent the last week talking with a mortgage broker and a few contractors to see what kind of offer we wanted to make.

Well, while the storm wasn't too bad here in SC, wife and I decided to drive by it yesterday to "see how it does in the rain" since we weren't sure exactly how water drains on the property, and found a huge pine tree had fallen across the house. I've spoken with the listing agent and he tells me the owner has already talked to their insurance company, it's not a total loss, and the repairs should be done by November. Said they would be open to a contingent offer on the repairs which works for us because we need to sell our home first anyway.

My question is this--since we wanted to pretty heavy renovations anyway, is there anything we can do to combine efforts here? I hate to think about it being brought back to the size and condition it was, for us to only have to go in and redo everything if we purchased it. I'm not trying to take advantage of a bad situation for the owner, but I wondering if there's a way this could benefit both parties?