County auditor may supplement.

Had you remained paying rent of $800 and supplemented $300 of your mothers rent somewhere you would have been farther ahead financially.

So far I'm a very aggressive entrepreneur, but I don't know the first thing about real estate, and that's where I want to divert a lot of my income to supplement my standard investment strategy of stocks, bonds, other companies, etc.

You need to realize it will ttake 25 or 30 units to maybe pay all your bills unless you just are looking for supplemental investment. 

I'm in Austin and thinking of buying a home with the prospect of making supplemental income with STR and eventually retiring.

Currently educating myself on investing in real estate, Ideally I would like to buy and hold, and rent properties out for a "passive" income to supplement my full time job.- Logan

You will need deep pockets to supplement your tenants rent.

In my opinion, if you can't do the above then you should always be thinking about real estate as a 'supplemental' option.

Also, investing in RE will nicely supplement your retirement income. 

I currently work in the laboratory of one of the major hospitals in LA.My aims with real estate are to supplement my income through investing in buy to hold properties (SFH and multi family).