And if it doesn't work out, he'll be chasing his barn and all the contents through the countryside in the next really stiff windstorm. Of course, when that outbuilding blows across the property line into the neighbors house and demolishes it, a simple "sorry" ain't gonna cut it.
(And your homeowners insurance carrier will be looking for any convenient "out" so they don't have to pay for it. No building permit, no engineering, no inspections is a perfect excuse for them.)
Think about it... Erecting the building to meet or exceed the local building codes is the right way to do it, and whenever in doubt go a bit "overkill". If you overbuild it a bit (or a lot) in good faith, and you can prove it with all the inspections and engineering papers and a pile of construction photographs - and something bad still happens - they can't come back at you nearly as easily.
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