I had one a long time ago where the town was not only very small, and even though they were within the city limits getting comps in a 2 mile radius was next to impossible, due to the fact that the people were building on family land which was 53 acres. I had them cut off 2 acres for the residential survey to make sure it appraised, but all the other parcels around them were 50-100 acre family land, too and nobody moves! Didn't think of that! A 3rd party appraiser gave up after 2 months and finally the underwriter allowed comps for rural property, to be within 10 miles instead of two and finally he shot over a terrible appraisal that was 26k short of my figures, When my manager told me the issue, I quickly said I had an appraiser that gave me comps for that deal, so we paid another appraiser $500 and comps worked and my appraisal came in at what I needed! My point is this: do a "value check" with several reliable and reputable appraisers and ask them if they have comps to support this number,(Do this before you accept the deal) and ask them " If not, what would their number be? "Then "value check 3 appraisers and they will either have comps or give you a number they estimate the comps will support and go with the one that gets you the comps you need! Get the comps so that if the lender's appraisal isn't what you wanted, then provide the comps and challenge the appraisal, That is allowed! And well worth the extra $500 it cost because it added 22k to my bottom line! It was accepted and the deal was saved! I hope that helps a little..and my appraisers in the different areas gladly provided this information free and I later used them for the appraisal! .so I decided to share my story! (Giddings, Tx Bert & Debbie Snyder!) Usually, the underwriter will make an exception if the exception is based on reasonable circumstances and an unsuccessful attempt>