Lets say I am a licensed Real Estate Agent and I am looking to purchase a house with my sister as a co-borrower.

The broker is willing to give a higher split to a co-broker.

He is a co-chair of the AutHaven retreat, and just yesterday was asked to be a part of Divergent Labs' think-tank, "Rhizome."

Make sure they can obtain a CO( certificate of occupancy) we recently bought a property that had 11 churches and none of them had their COs.

I do have each parent complete a co-signor agreement.  

If they did, they would effective be providing the financing along with you so their share of the company would be arguably greater.But you could partner with someone with solid credit as a co-GP and split the GP profits with them in exchange for providing operational sweat equity.

I've google searched this quite a bit for my own purposes & it does appear that in the state of New York a co-op is considered real estate for the purpose of a 1031 exchange.

Unless he is self employed, there is no option for the Solo 401k.If you establish a checkbook IRA LLC, you can also be named as a co-manager of the LLC to help him invest.  

We would require a co-signer with a SSN though, somebody you can actually chase if things go south.  

My name is Scott Ballard I am currently a co owner of an automotive repair shop.