You would probably do the best $ wise to find someone that wanted it complete. If it's in good solid condition and reasonable square I would think you could pretty well name your price. If you allow someone else to dismantle I would require 2 things. 1) proof of insurance and release of any liability to you while removing. 2) I would also require some sort of down payment or deposit equal to what it would cost you to clean up the mess if they fail to complete the job and some sort of timetable for complete removal. Way too many times someone is interested in something like this but it's way more project than they anticipate. They either take a few choice pieces and leave the mess for you to clean up or it drags on for months and months and ties up your future plans.

 Barring finding a buyer for the complete barn. Do some inquiring around there are quite a few now buying up old barn timbers. They are using them for making high dollar flooring and plank paneling because it is old growth timber.

I had a barn torn down earlier this year. We snagged a few of the choicest beams out kind of as an after thought in hopes of selling the timbers. Turns out the small pile we saved pretty much paid for tearing the whole thing down and cleaning up the site.  Of course a lot depends on the types of wood and age and condition of the beams. Lots of nails in them make them worth less too.

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