This house has had a foundation issue in the past and appears to be recurring.

Recurring income is just one of them -- often the least of them too.  

But I need to know if there is a monthly recurring fee for it?

There are tons of non-recurring fees required for financing other than just the interest rate, especially for hard money lenders.  

@Louis Lafata Also, if you happen to have any non-recurring expenses related to capital improvements that you ran through operating expenses (i.e. labor), be sure to break that out separately so you don't unintentionally show higher operating expenses than actual.

You can go through your bank account and credit cards to see what recurring monthly payments you have.

Additionally, he now provides a discount for my recurring business which is always good!

—as security for a loan, the borrower has a contingent liability.The lender is not required to include this contingent liability as part of the borrower’s recurring monthly debt obligations provided the lender obtains a copy of the applicable loan instrument that shows the borrower’s financial asset as collateral for the loan.

I'd label that recurring maintenance, I only charge the tenant if its abnormal.

One checking account is for all recurring expenses, including set monthly withdrawals into an emergency fund and extra principal payments on my primary home's mortgage.