The question and response quote you have supplied, first of all. Secondly, yes of course the land exists. I'm not suggesting you need a HV that the 100-acre parcel exists. I am suggesting that in a situation where the subject physical segment acreage portion of the parent tract consists of a non-legal lot and is then appraised by comparison to legal lots without consideration of the legal differential, then by definition, the value conclusion is predicated on a condition which is contrary to what exists, hence a HC is present. This is usually not an issue, state the HC or an appropriate EA if that works. In an assignment requiring an "as is" valuation premise this is not acceptable. In the case I am describing neither is an EA. See USPAP 2024-25 FAQ 188, 189, 190. Note the term "specific case", and the lack of an exemption from HC EA discussion in FAQ 190. Further, see Appraisal Institute Guide Note 15. Chapter 6 in the Official Appraisal Foundation 7-hour USPAP Update course is also illustrative.
Thank you for this response. I had considered this avenue. However, the valuation assignment at hand is not a situation where the subject portion is contemplated for separation or subdivision from the parent. The valuation conclusions are to be utilized in the calculation of another figure within an agreement which requires the "as is" market value of the subject acreage portion as an input. I have learned that USPAP requires that an EA may not be used in appraisal unless there is "reasonable basis" that the assumption. If there is not going to be any subdivision, there is no reasonable basis to make an assumption that it will be subdivided in any manner, let alone a timely one. This is actually something I was just made critically aware of, as I took the 2024 USPAP course, which explained in detail the meaning of reasonable basis in this context. The example had an appraiser using an EA for a proposed zoning change. But the zoning change was canceled according to the zoning officials. Since there is no expectation of the assumption happening, there was no basis for assuming it would. The same is true here. Otherwise this could potentially be a work around.
As an aside, USPAP doesn't require the terms extraordinary assumption or hypothetical condition as the labels for the assignment conditions the describe, They can be called anything the appraiser wants as long as the conditions are reported appropriately if the appraisal was developed predicated on conditions which meet the USPAP definition. As a designated member I appreciate that you use the Appraisal Institute term special assumption. Note that there is no difference conceptual difference between the SPV special assumption and the USPAP extraordinary assumption. (A of R E, 15th, 2020, p 44).