This was pretty easy to set up alone. Everything lined up, had no missing pieces. Thats the good thing about wayfair I have never had an issue with part holes not lining up like I have with stuff I ordered from other places. Only small issue I have is the door panel things were off one of the doors as I was taking it out of the box and the other piece ended up falling off during assembly. I am going to just glue it back on only reason for the 4 star the front of the door material is a little weak. Oh and I have 2 larger litter boxes for my cats so only 1 would fit and I had to kinda cram it in sideways because it wouldnt fit long ways.