In North Carolina, you can assign a contract to another buyer without needing to double close... 

I just had a deal that I was helping @Monica Pope with here in Clevleand fall apart because it was a triple that was a legal double.

You have a de minimis exception which is set at $2,500, and it can be doubled to $5,000 if you follow certain strict and tedious accounting practices known as AFS.

then ( at least in Oregon) contractor would sue lot owner for unjust enrichment.. and lot owner ends up paying double for many of the trades..

We learned the importance of thoroughly vetting our title companies and double-checking every detail.

I do that with a Vegas prop and we get basically double the rent and its A class so no need for PM. 

You can then prove your income not get double taxed on passthrough income.

My Class A home (nice suburb with great schools) is doing well but I bought it in 2013 and it has doubled in value from 2013 to 2021. 

Following to hear how skimping on the expenses involved in a true double close works out.I doubt a hold-open or a binder provides the coverage that will be needed here.

I know this is true because I speak with professional investors and brokers  every day virtually every broker and investor I deal with does not know how to do the math the so that you can double your investment capital every 1 to 2 years.