I think it would be very beneficial to have posted information about this. I'm not always 100% sure of what I'm looking at and know that many other agents, including ones with lots of experience, have a hard time at this too.
Is there a resource (database, etc) on the web that covers this topic?
Finally, Blank Man, I agree that if you don't know what you are looking at, perhaps you shouldn't be valuing it. Luckily, in my market, the vast majority of the houses are of the same type, so it isn't a factor when valuating.
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Adolfo Santiago, Realtor
Sun Crest Florida Properties
Orlando, FL