Market value
The estimated amount for which an asset or liability should exchange hands on the date of valuation between a willing buyer and a willing seller in an arms length transaction after property marketing wherein the parties had each acted knowledgeably, prudently and without compulsion
Fair value
The amount for which an asset could be exchanged between knowledgable and willing parties in an arms length transaction
Special value
A term relating to an extraordinary element of value over and above market value
Special value could arise, for example, by hr physical, functional, or economic association of a property with some other property such as the adjoining property