They signed a lease and are liable to fulfill the requirements. 

I always tried to make sure that nothing was pending on my side, by fulfilling each document request the same day it was made.And some of these refi's were rather tricky in the timing because they were 12 month hard money loans needing to be paid off with the refi lender also needing 12 months of seasoning before they would make the new loan - with just days of grace period overlap to complete the refi's.As for "useful life review", I assume this refers to the major systems, such as roof, hvac, etc... as they may wish to see reserves on hand to cover those replacements when needed.

You should have the potential tenant sign a deposit to hold agreement that states what you are accepting, what happens if he backs out, and what the money is used for if he fulfills the agreement.

The Contract has been fulfilled. 

If we have tenant A,B and C and they all fulfilled the terms of their agreement I do not see how the landlord could force tenant C to be responsible for extending the lease terms when they gave notice per the original agreement and vacated.

Don't risk ruining your reputation by getting a contract that you can't fulfill. 

@Josue Vargas - I paid just long enough to fulfill my need at the time, but I now just use the free version as well.

They are fulfilling their duty(so far).

Boom, you fulfilled your promise and can convert it to a rental without restriction. 

Then we rinse and repeat after she fulfills her year of occupying the property.So I bring the business/financials/experience and she brings the ability to get 3.5% down and flexibility of renovating the units fast.The property in question is a $400k quadplex that is fully rented at $3400/mo income.