I’ve had other random issues come up on holidays or weekends late at night with guests.

The land I will be building on is being given to me by a relative by adding me on to the title deed so I won't have any money invested in the purchase of the land. 

Change the fixtures and vanity (these are relatively inexpensive) to be more modern. 

-Lastly, any areas I should avoid that have had flooding issues in the past? 

The issue I am not a fan of seller financing is the following:11.

From my understanding, you have to spend 750 hours of annual involvement and 51% of your work relating to real estate to utilize cost segregation to offset income tax.Anything else I'm missing?

I'm only working on 2 or 3 at a time these days, and I'm basically a concierge helping these people with title work that they weren't willing to face, and I'm helping them figure out issues on houses they were going to abandon practically. 

Only issue with this is that if owner needs money, you'll likely have to come up with the difference between the loan balance and the value of the home as a down payment. 

. - so I guess I need to estimate what those would be - he is in his 70s and has uncles and aunts that lived until late 90s and one until 102 when no one did) and a comfortable retirement (he is extremely frugal so that's not an issue).

if you're only borrowing it for 2 weeks in ONE calendar year, i don't see why it would be an issue?