Seller carryback at 70 percent LTV, and the appraisal the seller ordered is the only one in the room
A seller considering a carryback has a real incentive problem. They want the value high enough to justify the price, which means the appraisal they commission before listing is working in the direction of their interest. That is not the same as fraud, but it is worth naming. When a buyer accepts seller financing and relies on that same report, they are using a document the counterparty paid for, on a question where the counterparty's answer and the buyer's answer are not the same thing.
The number doing the most work in a seller-carried deal is not the interest rate. It is what the property is worth on a bad day, because that is the day the note matters. Say a seller carries 140k on a 200k property. If the real market value was 175k when the note was signed, the buyer is underwater before the first payment clears. The seller, holding a first lien, is fine. The buyer is not.
A 5 percent difference in appraised value on a 200k asset is 10k. On a seller-carried note at 70 percent LTV, that 10k does not sit in equity the buyer controls. It sits in the spread between what was borrowed and what could be recovered in a distressed sale, and distressed sales clear at 15 to 20 percent below market in most conditions.
Getting an independent appraisal before closing a seller-carried purchase adds 500 to 800 dollars to the cost of a transaction where the buyer is already skipping institutional underwriting. That figure is worth arguing about.
When you are on the buying side of seller financing and one appraisal exists, who ordered it, and does it change what you do?