Started working on the exercise above as well this morning.

Vanguard and Blackstone have a lot of interest here as well. 

Well worth the money.

Feel free to reach out, my team has experience lending as well

It sounds like a single family house where you will be living in the house(personal use).Therefore, you may not be getting the tax benefits you think you are.Consult an accountant.I am not sure why your sister would agree to this as well, she is losing $170,000 in this transaction and she faces the possibility of you increasing her rent.You also have to charge market rent or close to market rent or it is all deemed personal use.

These homes are what most people picture as “home” and lend themselves well to coliving strategies.

Well, I'm going to see how she left my apartment today, we'll see how she did.

There is already at least one request with a lot of votes for this feature, and you can allocate your "votes" to it as well...maybe Buildium will start work on it after it gets a few hundred more votes. 

Well I think he was planning to pay it but it wasn't long overdue so he certainly wasn't expecting a lien to be placed on the house one day prior to sale.

Well, yes, some properties may require complete work, but others may just need cosmetic things to bring them back on the market.