Value in Use: “The value of a property assuming a specific use, which may or may not be the property's Highest and Best Use, on the effective date of the appraisal. Value in Use may or may not be equal to Market Value, but is different conceptually”. (The Dictionary of Real Estate Appraisal, 6th Edition). The terms Value in Use and Use Value have the same meaning in the dictionary.
read this and apply...the HBU value of a vacant May or may not be equal to the MV (in a $ amount. ) One would need to reconcile the HBU and value in use and explain it - some here refuse to believe it can be done.