And the obvious, again well documented, FOR PROFIT.... 

I am going to document costs and upload videos showing the construction process. 

I am no professional here, just explaining from my experience.. first, insurance starts claim and they send adjuster out to assess, check damages, and collect documentation.

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

I have copies of their 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.”

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?

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

Or you can sell it, split the equity, and go separate ways.I'm not a fan of borrowing from family/friends unless all parties are honest and everything is documented in a written contract.

A jury found Trump guilty of 34 felony counts of falsifying business documents to cover up an extramarital affair.