@Chris Emmanuel on being a Pro member: The advantages are indirect for me - I use the site, I meet people (including some of my clients) on the site, I learn from the site and enjoy it - therefore I want to support it just as I do my Public Radio and Public TV.

It is a series of services and products we offer our tenants to increase the Net Operating Income on our properties.

Its owned by one of our series.

,I may be wrong but ...If you received a contract signed by the seller which you then had your agent revise before you signed it, then the act of making revisions nullifies the seller's signature and the seller would need to sign the revised contract.If that is how the series of events unfolded, I would think you never had a valid contract signed by both the seller and the buyer. 

I appreciate being invited, JD, but my only auction experience is from an old TV show with drama that may have staged treasures in the units.

First off, I do not own any apartment buildings and do not play an apartment building owner on TV.

If you do a lot of flipping, definitely LLC (see if Series-LLC is an option for you).

It is not as easy as seen on TV.   

You got one.A Grand Slam off Mariano Rivera to win the World Series. 

If they are all equally qualified (areas covered, knowledge about investing, etc) I'd tell them all that I'd decide with a series of coin flips and I'd tell them that you're doing that to avoid damaging the relationship that you value so much.It's a hard situation, but if you're upfront with everybody, you should minimize the chances of hurting your friends.