Relatively easy to assemble. Husband put the first one together...read moreRelatively easy to assemble. Husband put the first one together alone by sheer force of will, second one we did together and was much easier to accomplish. We have been impressed with how well it keeps everything nice and warm, having the windows and door rolled up during the warmer temps is neccesary! The only feedback would be that we are not using it on a concrete foundation, so the bottom bows a bit. Hopefully it can withstand the winters and wind!