They keep you legal in regards to screening, notices, and so on.

I've done deed searches and look at different documents filed.

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

So we signed the documents and paid the closing costs.

I found this fact sheet which seems to indicate it would be possible to evict the rent stabilised tenants so long as they haven't been living there for more than 15 years or are older than 62 or disabled: https://hcr.ny.gov/system/files/documents/2020/10/fact-sheet... 

Re-read your contracts, document your correspondence (and attempts) with your builder and demand documentation to match up any payments/draws with what's actually been competed on your build.

I use this for tax and insurance which all properties have)Expenses (general business like admin/legal and by unit for repairs, trash, utilities...)EBITDA (earnings before interest/taxes/depreciation/amortization.

Hire a company/person that is solely a QI like @Dave Foster they do it every day and will keep you legal and on track. 

I also understand accounting and legality may play a role.

However, there are small parts of "Clearwater" that are unincorporated and therefore legal for 1 night stays, opening the door for successful operations.