Historically, the S&P 500 has provided a rate of return that is likely twice what your conventional mortgage rate is.I would not consider paying off a RE investment conventional mortgage off early except to take more money out (i.e. a refinance pays off one mortgage to get replaced with a larger mortgage). 

All she wants to do is to get some profit from her right. 

@Cherrell Thomas cash flow is the profit that's left after debt service, property taxes, property management, common utilities (if any), reserves for repairs (small things like leaky faucets, AC servicing, etc), and capital expenditures or capEx (larger things like a new roof,new HVAC, major plumbing overhaul...these are treated differently on taxes, written off over a specified longer period) and other expenses.The first item I mentioned, debt service, is where the answer to your question is.

The very experienced are often working on larger deals anyways.Good luck.

But whomever you "rent" from will take 50% of the profits. 

I have five townhome condos in addition to a triplex and a larger MF.

Typically, I would base the profit distribution on the initial capital contribution, but I am not sure if that is equitable in this situation as his skills will likely be needed more often than my skills as an attorney.

Unless you can do almost no down payment or you want to sell the properties for a profit, then I'd say pass on this one.  

@Josue Velney then those contractors arent very good businessmen . ( unless they are holding first position on a note)   Trusting a person or company to pay after you have  $ 50 K in materials and another $30K in labor plus profit .  

Hello BP -I'm a real estate broker here in Long Beach, California and I have a client that would like to sell his condo rental, that is paid off, and do a 1031 exchange for a larger multi-family property.