I've never run into that situation. 10 years ago I did a per-construction appraisal. The guy was in deep but tried to build a larger home than the approved plans and specs but ran out of cash and let the bank have it back. The lender then contracted someone to look it over and that's when they found out it was not being built to spec but was built about 400 SF larger. It was framed, decked, roofed. The new builder made some proposed changes to the layout and moved some walls. In the end, the builder bought the house for what the bank had in it and moved into the house himself. It was only a block from where his wife taught school. So, what "discount" applied? The guy got paid for his labor and ultimately paid the bank what they were owed...which was the draws from the first builder. What discounts were there? Both bank and builder were happy and all it cost the bank was me going back weekly and telling them what had been done that week. Took the guy 6 weeks if I recall correctly to finish.