I just did one end of last year,not something i would want to put up myself.It took a crew of 6 approx 2 weeks to put it up with a crane.You can click on my wedshots page to look at mine.It was a Borga,which has a local factory so if they was any problem I could go pound on their door.My advise is buy one from a local manufacture if possible,avoid "dealers" that have it shipped in from who knows where,if parts are missing your stuck.May sure your local city/county inspectors are familiar with the manufacturer you choose,otherwise it will never pass permits.Never buy one on epay,you will never get a final inspection on one it all the i's arent dotted and T's not crossed,of course calif is probably the worst for that stuff.I ordered mine 5 months before i got it,be prepared to wait.I had the pad cut,concrete contractor pour that slab and a contractor put up the building.Make sure you upgrade the concrete now if you plan on putting a lift in it.I went with 6 sack 3500 psi concrete for a 4 post lift,if you plan on a 2 post you will have to do footings while the concrete is poured.My end cost was 26k