Assembly took about 2 hours. Instructions could be a little more detailed and not all parts were labeled, but common sense will get you through it. You will need a drill as some of the hinge holes are not pre-drilled for you. Overall its a decent quality piece and does its job at hiding the litter box while looking like a nice piece of furniture. My husband had no idea it was for the litter box. Our cat seems to like the privacy and took to it well as a backup for when he can't go outside.