, and any other recurring revenue from a single source ( a house, for example) would need the LLC format for a company.

You won't likely find a master list of every way to process homeowner lists to find motivated sellers, but know that people build their businesses by doing just that kind of analysis on a recurring basis, always looking for a new way to approach marketing.

(every two months i require a throat surgery)This is a recurring theme threwout my professional careers.No tears no pity,im strong and determined!

For all those wondering, here is the relevant portion of Fannie Mae guidelines B3-6-05:"For all student loans, whether deferred, in forbearance, or in repayment (not deferred), the lender must use the greater of the following to determine the monthly payment to be used as the borrower’s recurring monthly debt obligation: 1% of the outstanding balance; orthe actual documented payment (documented in the credit report, in documentation obtained from the student loan lender, or in documentation supplied by the borrower).If the payment currently being made cannot be documented or verified, 1% of the outstanding balance must be used.Exception: If the actual documented payment is less than 1% of the outstanding balance and it will fully amortize the loan with no payment adjustments, the lender may use the lower, fully-amortizing monthly payment to qualify the borrower."

Fix & flip, owner financing type scenarios work out best where you're not responsible for repairing the home on a recurring basis.  

The software I worked on also lets events recur at regular intervals, so you could enter one event once; set it to recur, say, every 30 days (or whatever custom period), and then you'd be able to see on an actual calendar a list of what your day, week, month, or year looked like at a glance.Is this for rental properties?

Do I have to include that in my recurring monthly debts?

Capex and recurring maintenance cost are not the same.

Because, in all honesty, after closing and you set up your recurring payments to pay the note every month, you may never interact with that individual again. 

Why speculate on what the grapevine tells you about such an important recurring expense item?