I have an order to appraise thirteen acres with an old grist mill that supposedly has historical significance. It's is in the back of the property, accessable only by a very rough and wet dirt road. Had to actually put the ole jeep in 4WD. The owner thinks it at least has some salvage value. His estimate was about $30,000, but it's only 4800 sf standing up and it has definatly fallen down. I'm not knowledgable about estimating the value of old timbers, but I am an amatuer woodworker and I don't see much more than a few hundred board feet of $4 wood, plus the cost to demo and transport. Anyone have any advice or experience on "historical" appraisals?