I've used propstream, but I would like to find something that is just a pay per list, not monthly fee.Second, are there any tools that allow you to search for individuals that have owned multiple properties over a given period of time? 

My primary interest lies in the Houston market, but I’m open to exploring other areas as well.So far, I’ve read The Book on Rental Property Investing by Brandon Turner and am currently working through The Book on Managing Rental Properties.

Also, there is a smaller, but very active group in Delaware County called "Delco Property Investors" or DPI.

Example, lets say your Roth IRA purchases a property for 100k, with a 50k down payment from the Roth IRA and a loan for 50k.

There’s likely a carrier that’s most aggressive in the city where your 4 unit is located and comparing your premium to that of similar properties  nearby will be the most accurate assessment and point you in the direction of the most aggressive carrier.

The property is 20 mins from San Diego proper and 30 from the beach.

When I closed on my first duplex in Harrisburg, Pennsylvania in August 2017, "the 2% Rule" was the gold standard for determining whether a property would cash flow.  

I would offer 90% of the market value. if he sells it you with no agents he is saving 6%~ on real estate agent commission and the other 4% is a convenience fee in that he dos not have to endure showings etc. and you will get better pricing on a non-owner occupied property if you put down 25% is compared to 20%.  

Ultimately, I'd like to go into MFR, LTR, but I think maybe I should walk before I run, so I'm evaluating the markets for both MF and SF properties.

The house will surely continue to appreciate while I either rent out the property or Airbnb it.