@Kirsten KnightenWelcome to the site.Sounds like you are new to real estate investing.I strongly urge you to look into becoming an agent if you wish to connect buyers and sellers together and earn a fee or commission.Not only is it a much smarter, more lucrative and more productive way to earn it will also insure you never get yourself in any trouble over possible unlicensed brokerage activity.

I would also tell each prospective client about the legal ramifications of working with an unlicensed/uninsured contractor. 

Hammond and Whiting are very tough on unlicensed contractors and investors who use them.Just my $0.02Good luck!!

I've heard the term in the context of licensed lenders, and have heard similar terms used for rules implemented for licensed real estate brokers, but I've never seen anything that deals with unlicensed buyers or sellers.I have to imagine that thousands (tens of thousands?)

Some TK providers may be using Johnny Lunch buckets and unlicensed contractors and getting a tad bit of a discount, but some companies are just better at running a business and I include myself in that.

I'd argue it would all either be UPL or unlicensed CPA-ness. 

And your unfortunate scenario for un licensed investors varies state to state, let us not also state.Ohio, OR, WA being strict staes that I've heard of here.  

Wholesalers try to avoid being "unlicensed brokers" by becoming a principal in the transaction.  

It is not like the GC's of the world are getting robbed because of the unlicensed handyman.

They teach what is legally allowed by unlicensed marketers.