My in-laws own rental property in SoCal already (a cash flowing triplex in the San Gabriel Valley) and it would be ideal to follow in that same mould and have properties that are nearby.Our ultimate goal, for now, is to more or less supplement our income, not to replace it.

The advantage is that I can buy another house with cash (and own it - supplementing cash flow drastically).

.,  and then they may supplement that with Excel for billing purposes.  

In a few years time you could end up with a nice passive income stream from 10 leveraged properties.If you are looking for even more involvement beyond that obtaining a real estate sales license would be a good supplemental income stream as well.

There are supplemental origination fees, inspection fees, safety buffer contingencies for the rehab.

It is such a small gesture of my sincere appreciation of what this site enables me to do in creating generational wealth for my children.

I got mine to supplement my income and also to gain access to the MLS.

That does not mean I would increase it by that much every year, but it would at least enable me to do so.Something tells me that this would not be legal though.

After I resold the home I received a Supplemental Property Tax bill using the price I paid for the house in June (~$250k) as the new assessed value. 

I imagine the mortgage has provisions that enable the lender to pursue any of the named parties in the event of a default, in addition to the property itself being on the hook.I believe that if the seller can pay off the mortgage loan, it doesn't matter how many names are on the mortgage.