Real property is held outside the retirement account, and while tax is paid on income/rents, depreciation will defer about 30% o the income, and the new tax law may eliminate tax on another 20%.  

The house is sitting on the market under the R-2 Zoning code as a single-family house not as 2 o 3 units.

I lived near the University of Oregon before moving here a few years ago and noticed that most landlords were making much more money renting by the room for U of O students.

If you have more money than time, o direct mail, PPC, etc.Whatever you choose, be consistent. 

Right now, I have a friend who is considering adding a half bath to his first floor by removing a closet w/o a permit and I am really trying to convince him not to. 

For pulling data land data, check out Propwire (free w/o skiptrace), BatchLeads, Privy to name a few.

I have sold multiple houses w/o realtor and bought my current home in the same way.

Quote from @Ed O.: I don't like doors as a metric but appreciate it when a newb starts using the terms in excess as it tells me they've started in the last 2 years or have 1 or 2 "doors" without me having to ask.  

Possible approach changes and sacrifices you may have to make:Expand your search to properties that are not move-in ready where you can utilize a Renovation Loan  (such as an FHA 203K) o improve the property. 

Disclosures: this post is an anecdote about a Raleigh NC property for illustration purposes; the numbers presented are actual numbers from my Quickbooks report; the Rent-O-Meter price, T-Bill rates (in the links), taxes, insurance, and PM fees will change over time.