It is extremely helpful if the prospective tenant approaches the application process like a job interview-- is punctual, well groomed, polite, respectful, and communicates in an honest and open manner. 

I have kept good communication with the sellers.

Sales and communication is what will probably get you through it.  

@Anil Samuel I had similar issues with Wells Fargo (Also a customer of buyout chain since 1996) and when I applied for a HELOC on a rental, it was totally disorganized and there was no communication.

Couldn't agree more with the things being said.REI is a transactional business and a people business, which means your people skills(communication skills) is the most valuable.I have less than 10 people on my buyers list because all of them understand that I will prioritize them with properties and deals, while they give me reasonable offers where we both win. 

Drives me crazy dealing with them because there's no way to communicate rationally with them, even if they're flat out wrong and you show them. 

You are the new "manager" I would communicate with them via letter regarding the change of management.

A small volume seller financing lender won't be able to comply with the communication, notification and collection requirements in the regs. 

So without that pretty pre-approval letter it made it very difficult to look at properties to get numbers to make sure it was a good deal and it was impossible to take action if I did not have said money in hand.Chris's question was to have a business plan to show non REI people to help him with his business and its more than pretty pictures its a professional way to communicate.

I have seen some that offer online portals for tenants, vendors and owners and therefore keep all communication and financials tracked.