I have an updated single family ranch home 4BR, 3ba ~3000 sq ft in suburb of Cincinnati, OH that is currently leased at $2700 per month.

I have many GC's who have placed bids on conducting a full rehab / even new build, and the area is in a great neighborhood with $400k homes across the front yard.

Here's a very simple break down that you can do more research on if you choose....Short-term rental insurance...This coverage is "STR homeowners" policy that would cover any damage to the property from a storm, fire, guest, and even liability if a guest gets hurt.

Looking to purchase 1-2 single family homes this year and trying to determine whether to self-manage or hire a property manager.

If I were to recommend a single course to get you going & with the best information, it would be landrichesblueprint.com. 

Any recommendations on landlord insurance in Los Angeles for a single family residence? 

My mom is a single parent with 3 kids.

A C-10 Electrical contractor can explain how to split the units, you may have to sub meter yourself.splitting a single unit in 2 is generally more complicated than building a common wall. 

Especially if you're single with no kids yet...house hack. 

Are there any good places to look for single family houses besides zillow, redfin, ect...?