I'm buying a duplex in Jacksonville Beach, FL that has been legally separated into two separately titled townhouses, which means I'm currently going through two simultaneous purchases with two separate sellers (ugh). 

I tried but had a triple simultaneous closing all on the same day.

@Jay Levy, A simultaneous swap can certainly be done and it can be done without the normal QI involvement with the 1031.

I don't buy anything unless it will cashflow and I can grab at least 20% equity simultaneously.

Three back-up offers in an hour, and they took ours first, came back and said, raise it $1000 and we're done, no simultaneous bids or anything.

As title states, I'm curious to know how many rehabs you have done at one time simultaneously.

It seems like the reasonably priced ones (near or at market) are closing simultaneously with listing?

So you will need some source of money to close the AB transaction.Also, you're going to hear terms like "double close", "simultaneous close", "wet close", "dry close", etc.

In doing this I've accepted a lower profit margin while simultaneously enjoying very short market time and faster turnover of capital.

One is locating a property a buyer ends up buying and the other is simultaneously closing a property I am buying and selling at the same time.