I have the opportunity to tear down an old barn (and I do mean old) which I plan to use its frame to build my own barn. I realize this is going to be a big project and have some questions. First, the owner is asking how long we expect it to take. He wants everything we take off to be hauled away the same day and I plan to take a pick up load (full sized 4 x 4) each day working 2-3 days a week. How long do you think that will take for a 18 by 32 ft 2 story barn (sitting on concrete foundation not responsible for concrete removal)? Second, this is a 2 story. Ideas about saftey measures when working on the upper half? 3rd is there liability insurance available and if so is it expensive? My major concern is that it borders a narrow alley with he neighbors barn right across from it. People drive in the alley and cars are parked not very far from it. I am wondering if it is too much for 2 people- my 20 yrs old son and I, who has never done this before? We have built sheds and coops and such, but never torn down anything large.