These accountants believe that purchasing from a related party is fine as long as it is an arms- length documented market-consistent transaction.   

Meaning you cannot just evict a tenant because their lease has expired.You will have to build sufficient evidence admissible in court and to the satisfaction of a judge to prove good cause to get a warrant of eviction.Many housing providers kept high risk tenants on month to month leases so that if the tenant stopped paying rent, you could simply give them a notice to vacate and recover possession of the rental unit that way.The reason for this methodology was because the HSTPA of 2019 passed in NYS made it extremely onerous and costly for housing providers to evict due to non payment.That method under good cause will be eliminated.So you can still keep tenants month to month but you will need to document the lease violation due to nonpayment rigorously.How many times and how late is “good” enough?

We take ID's for all guests (in a website called Chekin) so would have documentation the booking guest is above 21.

This is an area where members can share spreadsheets, forms, documents, pictures, and more.

Document the details of this deal as your sample deal.2.

All you can do now is take pics and document what she is doing.

If neither wants to sell you may consider putting everything into a jointly owned LLC with governing documents spelling all of this out. 

There are so many landlords that never update their lease or other documents.

When it comes to taxes, the key to successful planning is documentation; retain all records of spending, as all those costs can be deducted.”

I find that if things are well documented and reasonable, they are pretty good to work with.