You should then receive a physical collateral file if not already an electronic one - Collateral file is a a file which contains all of the previous mortgage paper work including things like alonges, deeds, borrower personal information such as bank accounts and credit scores at the time of the sale, pretty much all the paperwork submitted, required at the time of the sale. 

Is there particular/formal documentation we need to provide regarding the transfer of security deposits, rents, agreements, etc?

We moved, and just received (at day 31 after move out) a certified letter stating that we had $7100 worth of smoke damage in the apartment "pending additional charges to be determined".   

I'm getting a letter certifying that I have not received any security deposits from the estate and that the estate itself never had security deposits to give me. 

Start a document that outlines every system in a home and start compiling pricing information based on information from contractors (I used to be a GC and I'd rather give someone a price per SF over the phone rather than visit the property thinking they're ready to work), information from other investors, asking questions online, friends and family that have had work completed on their homes. 

I even offered to keep the document for the community for no charge in order to save money. 

I used to factor companies' receivables.  

The expenditures included in the total acquisition cost must be fully documented by theborrower.When the installment land contract was executed more than 12 months before the date of theloan application, Fannie Mae will consider the mortgage loan to be a limited cash-out refinance.In this case, the LTV ratio for the mortgage loan must be determined by dividing the new loanamount by the appraised value of the property at the time the new mortgage loan is closed.

What documents do I need to to ask for on a multi-family property in order to "run the numbers?"

Has anyone had a seller unwilling to provide these documents before?