The result is taxable income + penalties.With that said - there are great opportunities to use retirement accounts to grow in value and allow you to be involved in real estate.

Simply from what you have stated I would think of taking this in a couple directions, both would involve forming an LLC.

Crowdfunding involves syndicated deals and those deals may be Equity or Debt (Lending). 

Always a good idea to at least have a lawyer go over it to ensure you're covering all your bases.Purchase and Sale Agreement - This would come from the real estate broker you are dealing with.Lien Waiver - I cannot speak for CA, but I know that in FL there are very specific wordings (only about two sentences) that are provided by the Florida Statues that everyone can use for simplicity.There are many different types of contracts involved but these are the first three that came to my mind.

I'm interested in connecting and collaborating with anyone who is already involved or looking to get involved!

@Joe P.Yes, it's a calculus that involves the time value of money, cash flows, your "normal" investment rate of return, etc.

I know the dreams I have and I also know that this involves a lot of work.

Real Estate experienceI am by no means a realtor but I have been very involved in purchasing 3 personal properties and 1 beach property. 

As already mentioned above, you will report the activity in the schedule C if there no entity involved or if you have single member LLC. 

The time and effort involved with screening and background checks seems difficult to handle so far away.