Hello.  Please advise!  Do you HAVE to use a Qualified Intermediary for an exchange?  I know you don't need one for a swap, but that is not my case.  I am selling one property and purchasing another.  I might be able ...

Esentially buyer will close the first mortgage at closing then simultaneously applying for a HELOC.

Most of those things can be worked on simultaneously by a skilled tradesman with a helper. 

A separate insurance agent, agent #2, who I reached out to simultaneous to agent # 1 provided me with an HO-3 quote through a different carrier with an excellent rider (I have read it) for covering short term and corporate rentals as long as our house remains our primary residence for at least 51% of the year (which is our desire - in fact we only want to rent about 90 or so days per year).

A separate insurance agent, agent #2, who I reached out to simultaneous to agent # 1 provided me with an HO-3 quote through a different carrier with an excellent rider (I have read it) for covering short term and corporate rentals as long as our house remains our primary residence for at least 51% of the year (which is our desire - in fact we only want to rent about 90 or so days per year).

@Minna ReidAll of these things can not happen simultaneously.

Not all lenders will allow you to do them simultaneously.

Annie,The best way to attack is starting and closing them all simultaneously with the same lender. 

2) If solution involves multiple simultaneous transactions, will that still enable the seller to 1031 from the profits from the entire portfolio?

But even if it does happen and let's say 400-500k homes come on the market simultaneously; those numbers are still not anywhere close to 2008-2010 when 10's of millions of homes suddenly flooded the market.