The only trades required to have licenses are electrical, mechanical and plumbing.

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I am about to flip my first house which is a rental house of my mother's and I am trying to figure out a deal for the house I am living in right now to trade into a different house.

We will look into some possible "trade" tenants that are looking to expand out of their homes/mobile-only business.

Andy yes, if you read their addendums, they can likely cancel the contract at any time for no reason whatsoever, and simply return your EM.

If I come across a tenant with any drug involvement whatsoever they will be rejected.

You'll meet investor friendly people from all trades. 

Since then I've slowly expanded my tool collection by trading work for tools.  

The only thing I can say is be patient after all this is real estate and it's all about sales if your looking for fast money you might as well go into stock trading the will probably give you the rush you're looking for.

I see it as a trade off, cheaper purchase price but a more limited buyer pool in the future, thus probably cheaper price.