I took about 6 days to put this up by myself.  Each night, after work, I would put part of it together. Doing it by myself took more time but it can be done.  One problem was that the bars attaching the sidewalls were short by two.  The parts inventory said 8 but the photo of the assembly showed 10 were needed.  Thankfully there were 2 extra bars that I could cut and drill to finish the garage. Have a lot of items inside and has ridden out two severe thunderstorms with hail.