Long story short... we are looking to buy my in-law's house. we had an appraisal done 1 year ago and they had their own appraisal 2 months ago.. $115,000 difference. Our lender's appraisal came back yesterday... $150,000 difference between my in-law's appraisal and the bank's. Our agreed upon price was a split of the original two. Now with the lender's appraisal we are still over $100 k apart. One or more of the appraisers didn't do their job appropriately. How can there be this much of a difference? How can we contest or challenge the lender's appraisal? This is an obvious deal breaker for all of us and the bank. Comp adjustments are all over the place... one adjusts 30 k for a finished basement, one 8 k. The property is on 11 acres... one adjusts 17,500 k per acre the other 5 k per acre? I can see where the numbers are off but why? How can one do "land" comparables then add this comparable amount (17,500 k) per acre to the adjustment when the other two did not do land comparables but added 5-8 k per acre adjustment? One looks at comparable homes on less than 2 acres but similar size, age etc and the others look at homes of similar size, acreage but almost double the age. Is a 4th appraisal going to be any different? Any advice? Thanks.