Actually, there is a respectable argument to be made for Heidi's position. The argument goes along the lines that when significant changes take place regarding the relevant characteristics or property rights, the result is a new "subject property." I don't have my Dictionary of Real Estate available, but I'd be surprised if there is a definition of "subject property." Common sense says it's the property being appraised. So if I'm appraising a 1 acre parcel that's been split off a 640 acre parcel, what is my "subject property?" There are now two new properties. The old "subject property" no longer exists. What if the entire 640 acre parcel changed hands a year prior to the split?