This is where the debate should begin. An airline pilot is not an expert on property values any more than I am an expert on flying. Cost does not equal value. Desire does not equal value, unless you are paying cash, of course. If a borrower wants to pay more than a home is worth, let them pay it out of their pocket. It is not the appraisers job to make the propety worth their price so they won't have to pay any cash. This is a custom home build job. I have no contract to work with. I do know that he paid in the the $40-45,000 range for the lot and now he says it is worth $65,000. The loan officer says that they are working with a $390,000 cost to build (including lot), but can't clarify if that is with what he paid for the lot or his estimated lot value. He already has a per-construction appraisal for $433,000 with three home sales that are over 10 miles away, over 800 SF bigger and don't have hangars. The underwriter asked for at least two sales from the addition (there were over 200 sales in the addition last year) that support the value. He provided one lake front property and two lake front properties from another gated addition five miles to the north, all three of these sales are over 800 SF bigger. This property is not on the lake, it is not on the air strip, it is across the street from the air strip and must access the air strip through grass alley ways and crossing the paved street. I have one lot sale across the street that is bigger and has direct access to the air strip that sold for $47,500. I don't know about your areas, but most additional improvements such as pools, workshops, barns, etc suffer form functional obsolesence and have a lower contributory value. Rarely, can we give somebody $35,000 credit for their pool, $25,000 for thier barn or workshop, etc. We don't in Mr. King's area either. The borrower has a skewed idea about what his home is worth because of the ridiculous appraisal that was done pre-construction.
Mr. King and Mr. Trotta are correct, I should attempt to find another home sale with a hangar, and use it as support for my value. However, the theory of substitution applies to all aspects of the property and certain things like site value, location and market appeal should also apply and many times appraisers forget this part. Remember the golden rule of Real Estate: location, location, location. Any sale I provide outside the area should only support the adjustments I have made for the homes directly in the subject market area.