Yes you need to include a definition of the value you are reporting but it isn't Market Value, it is Market Rent. Considering you have someone that is training you I assume you have access to the Dictionary of Real Estate, 6th Edition. The definition you seek is in there.
Ok. So this is from the 8th edition.
“MARKET RENT: the Rent that a comparable unit would command if offered in the competitive market.”
Can I just use that as my definition and cite Barron’s 8th edition Real Estate Terms? asking for 2 reasons. #1 want to know. #2 just seems too easy (as should be) in the world of lawyers in 2018.