So for those a little “fuzzy” on “due on sale” let’s state it clearly
When a property is transferred either through warranty deed, contract for sale, leasehold interest for more than 3 years, or any other method meant to transfer fee Simple property rights, the lender has the RIGHT, (not obligation) to “accelerate” the note, in other words call the note due. The lender still has to follow foreclosure laws of the jurisdiction (state) the property is located in. This means the lender must (1) reject any payments from that point forth (2) comply with providing proper notification (3) allow a certain amount of time for the borrower to pay the loan in full and (4) auction the property off in non judicial states. In judicial states the lender additionally must file suit and have a judge sign off on a foreclosure sale. This takes 2 months to 3 + years. The borrower can pay off the remaining principal balance, unpaid interest earned, legal fees, etc. At any time up to the foreclosure sale and would retain ownership of the property.
In the past, two things (there are many others) kept lenders from foreclosing when a property was sold without the loan being paid off and without lender approval. First, it was difficult for lenders to identify which of their loans were being sold subject to as county recording information was not easily accessible. Second, interest rates have been in a general decline for 40+ years and so lenders could only replace a paid off mortgage with one that yielded them less. Now, deed information is on line and easily accessible, and interest rates have risen the last 3 years.
The Garn - St Germain Act was originally intended to prohibit Federally Insured institution or Federally guaranteed loans from being non assumable. This was because when mortgage rates hit 18% in 1981 all real estate transactions, except for cash sales, would have stopped without the assumability of 6 -7% mortgages written 10 years earlier. The banking industry and mortgage industry put on a full frontal lobbying assault with the result that the Garn - St Germain Act was GUTTED. What remained was that institutions could not enforce the due on sale clause under only 2 specific scenarios; (1) the “transfer” was from the debtor to a living trust he remains in total control of, and (2) the transfer is between two spouses as a result of a court order divorce decree.
In a “subject to” transaction the parties have additional risk higher than a traditional sale. The buyer risks having the note accelerated and having to come up with the cash to retire the note to keep from losing the property. The buyer also has the risk that the seller will sue him if such does occur and the buyer is unable to retire the note.
The risk for the seller has to do with the fact that the seller is liable for a note secured by a property he no longer owns. So, all the normal options of selling the property, getting a tenant, negotiating lower payments, restructuring the note, modifying the note, etc. are no longer available to the seller/borrower should the note be called due.
Although there are numerous safeguards, contracts, escrows, that can be used to mitigate the additional risk, that risk can not be eliminated. Each participant in the transaction must decide for themselves if the benefits outweigh the increased risk.