Costs a lot less to do all pad sites together versus individually. 2.  

We are listed on many sites - Zillow, Trulia, HotPads, Apartments.com, Realtor.com, ForRentUniversity.com, Redfin, Rent.com, showmetherent.com.

Clearing potential building sites.  

Keep it simple - sell the property and let each sibling do what it is that they want.If you keep it and do a refinance(to pay for the bills)Who will be on the loan, will it impact everyoen's DTI?

It's simple interest income (unless you do it in an IRA).

Yes, on hold again as of 12/26, and you can always check the official government site itself:https://fincen.gov/boi

I also agree that RE appreciation is unlikely to match the last dozen years, but you never know.Where I am unsure we agree is that paying $450k to improve the cash flow ~$3k (your numbers but I expect my delta wold be similar meaning both my cash flow estimates would be worse than yours but both would be worse by the same amount not affecting the difference) makes sense especially if the cost of having the extra $450k is only 6% rate which is historically simple to beat via numerous investment options and hopefully no one is investing in RE for an expected of 6%.  

I have never paid for a course but spent $15 on a book about Airbnb rentals and it's simple math.

Somehow, I had it in my head that I didn't want to do a cost seg, I like to keep things simple and cost seg seemed not worth it, so I have been investing for over a decade before we did the first.

Well, it is a simple comparison that makes sense.