I know many investors from around the world that do this for many years. 10- 15% NET income is typically what they are getting. 

Also, targeting traveling professionals or insurance clients for mid-term stays can sometimes yield higher rates than typical monthly renters.

It is typically your primary job.The 40 hr/week W-2 worker is going to have a hard time convincing an IRS agent they are meeting this threshold.STR loophole is a better path for my friends in this category.Once you finally cross the pro hurdle, you're not done!

You can do 3.5% or 5% down typically.

The transfer tax you typically need to complete a form showing what the property sold for.

I typically also share details about the market and how we find off-market opportunities. 

Although not a big deal, my tenant that is renting my property through THD is typically more demanding with an attitude of "I don't care, the insurance company pays for everything".

Whereas a bandit sign will typically be vaguer and suggest “we buy houses,” personal property signs will state the home is for sale.

I'm not a lawyer, and you can speak to an attorney about this, but in my experience people are typically thinking that putting their property in an LLC "protects" them. 

A typical amount might be 20%.