Yes, you can sell a land contract to private buyers just like banks sell mortgages to institutional buyers.Like I said, consult with an attorney. 

I have found that it depends on the broker or lending institution.

It is a credit union that I have HELOC with.Plan to establish a portfolio lending relationship with a local institution within the next year.Looking for anyone who already found a portfolio lender near NYC.

Most IRAs are held by institution that sells investment products.

Non US citizens have meager institutional options when seeking to finance investment real estate here in the US.Which leads me to wonder why more foreign investors don't actively seek out (or seek to create) deals financed by the seller.

The plan is a trust, you will be the trustee, and you will operate the plan out of a bank account at the financial institution of your choosing.  

They are both non-institutional loans.

I'd very much like to have mortgage loans through an institution.  

Expect for a lot of institutional money to shift back into other asset classes when rates start rising.  

The lending institution will look at the numbers on the property to determine if it is a good investment.Run the numbers to see if they make sense.